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9966 [12]
2 years ago
10

19=5+7x i need explanation it’s two step equation btw

Mathematics
2 answers:
nikklg [1K]2 years ago
6 0

Answer:

x = 2

Step-by-step explanation:

subtract both sides by 5. left with 14=7x. divide both sides by 7. x=2

Marysya12 [62]2 years ago
3 0

Answer:

  • \boxed{\sf x=2}

Step-by-step explanation:

\sf 19 =5+7x

First, let's swap sides so that all variable terms are on the left hand side.

\sf 5+7x=19

<u>Subtract 5 from both sides:</u>

<u />\sf 7x=19-5

<u>Subtract 5 from 19:</u>

<u />\sf 7x=14

<u>Divide both sides by 7:</u>

<u />\sf \cfrac{7x}{7} =\cfrac{14}{7}

\sf x=2

_____________________________________

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The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 Substitute the value of y in the first equation: Combin
svp [43]

Answer:

X = 1

Step-by-step explanation:

To solve the system of equation by susbtitution:

3x + y = 9

y = –4x + 10

We can follow the steps thus:

<em />

<em>Substitute the value of y in the first equation:</em>

As in the second equation y = -4x + 10 we can substitute in the first equation as follows:

3x + y = 9

3x + -4x + 10 = 9

<em>Combine like terms: </em>

3x + -4x + 10 = 9

Like therms are the therms with X (3x - 4x = -1x):

-1x + 10 = 9

<em>Apply the subtraction property of equality: </em>

-1x + 10 = 9

As 10 is suming, it passes to subtracting the 9:

-1x  = 9 - 10

-1x = -1

<em>Apply the division property of equality:</em>

-1x = -1

Dividing in -1:

x = -1 / -1

<h3>X = 1</h3>
8 0
3 years ago
Please help me with this!!!!!
Orlov [11]

Answer:

C. ΔJKL, in which m∠J = 15° and m∠L = 45°

Step-by-step explanation:

To solve, let's find the missing angle of the triangle:

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That means a solution should have at least 2 solutions from the solution set (15 , 45, 120)

C, is the correct choice.

If my answer is incorrect, pls correct me!

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7 0
3 years ago
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Step-by-step explanation:

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At 2 PM there were 13 seagulls on the beach. At 5 PM there were 70 seagulls. What is the constant rate of change
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The answer is 57 I hope I helped
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3 years ago
X+2y=3 <br> 3y+5y=7 <br> I dont know
Lena [83]

Answer:

Step-by-step explanation:

3y+5y=8y

8y=7(divide 8 in both sides to get y)

y=7/8

x+2y=3...but we already know the value of y, so substitute 7/8 to y

x+2(7/8)=3

x+14/8=3

x=3-14/8

=1.25

8 0
2 years ago
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