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iVinArrow [24]
3 years ago
9

Solve for x 4(2x-1)= 3x-19

Mathematics
2 answers:
Sophie [7]3 years ago
8 0
X=-3
This is the answer
drek231 [11]3 years ago
7 0

Answer:

x = -3

Step-by-step explanation:

In an equation our aim is to find the value of what we are looking for as well as keeping the equation balanced. For example if we took away 4 only from one side then the equation would change so it's an important rule to keep in mind when solving equations, that you need to keep both sides of the equation the same.

4 ( 2x - 1 ) = 3x - 19

→ Expand the brackets

8x - 4 = 3x - 19

→ Minus 3x from both sides to isolate -19 and bring all the x coefficients to one side

5x - 4 = -19

→ Add -4 to both sides to isolate 5x

5x = -15

→ Divide both sides by 5 to isolate x and therefore find the value of x

x = -3

→ We can substitute x = -3 back into 4 ( 2x - 1 ) = 3x - 19 to see if we have the correct solution, if we end with the same number on both sides then  x = -3 is correct.

4 ( 2x - 1 ) = 3x - 19

8x - 4 = 3x - 19

( 8 × -3 ) - 4 = ( 3 × -3 ) - 19

-24 - 4 = - 9 - 19

-28 = -28

So x = -3 is correct

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-(7-2x) + 7 = -7<br><br> What is X?
Mekhanik [1.2K]

Answer: x= -\frac{7}{2} = -3 \frac{1}{2} = -3.5

Step-by-step explanation:

−(7−2x)+7=−7

To find the opposite of 7−2x, find the opposite of each term.

−7−(−2x)+7=−7

The opposite of −2x is 2x.

−7+2x+7=−7

Add −7 and 7 to get 0.

2x=−7

Divide both sides by 2.

x = \frac{-7}{2}

Fraction  −7/2 can be rewritten as −2/7 by extracting the negative sign.

x = -\frac{7}{2}

4 0
2 years ago
The expression 35 + 45x represents a train's distance, in miles, from a terminal after x hours of travel. How far was the train
9966 [12]

At the beginning of the journey, it was 35 miles from the terminal. This can be found, by looking for the constant (35 in this case), which shows that it will never be changed.

hope this helps

5 0
3 years ago
Solve 5x4/9. help pleeeeaaassee
Rus_ich [418]

Answer:

\sf \: 2 \frac{2}{9}

Step-by-step explanation:

Q) 5 × (4/9) = ?

→ (5 × 4)/9

→ 20/9

\rightarrow\sf \: 2 \frac{2}{9}

8 0
3 years ago
Read 2 more answers
Which explanation about figures is correct? * A. All rhombuses are parallelograms. Parallelograms have 2 pairs of parallel sides
bezimeni [28]

Answer:

The correct option is;

A. All rhombuses are parallelograms. Parallelograms have 2 pairs of parallel sides. Therefore, all rhombuses have 2 pairs of parallel sides

Step-by-step explanation:

A rhombus is a quadrilateral that has all 4 sides, it has equal opposite angles and perpendicular diagonals that bisect one another  as well as having a pair of opposite parallel sides making it a parallelogram

A rhombus is similar to a parallelogram which also has equal opposite and parallel sided and equal opposite angles and the diagonals of a parallelogram also bisect each other.

4 0
3 years ago
Explain why 2/3 x 12 can be written as 2 x 12 divided by 3.
Inga [223]

Answer and Step-by-step explanation:

\frac{2}{3} × 12 can also be written as \frac{2 * 12 }{3} because the 12 is multiplying the numerator of the fraction.

12 can also be written as \frac{12}{1}.

When we solve, this is what is happening:

\frac{2}{3} × \frac{12}{1}

The 12 will be multiplying the 2, while the 1 will be multiplying the 3. Because 3 times 1 is 3, we don't show the 1. So, that can leave us with 2 being multiplied by 12 in the numerator.

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

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3 years ago
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