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Troyanec [42]
4 years ago
15

How do u do this???????

Mathematics
1 answer:
Zanzabum4 years ago
7 0
2x-y=60/100* 5y

2x-y= 6*5y/10

2x-y=3y
2x=3y+y
2x=4y     | :2 
x=2y   | :x

1=2y/x   :2

⇒ y/x= 1/2


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Solve the equation 3(2x+2)=3x-15<br>x=-7<br>x=-17/3<br>x=3<br>x=7​
Nady [450]

3(2x+2)=3x-15

mutiply the bracket by 3

(3)(2x)(3)(2)= 6x+6

6x+6= 3x-15

move 3x to the other side

sign changes from +3x to -3x

6x-3x+6= 3x-3x-15

6x-3x+6= -15

3x+6= -15

move +6 to the other side

sign changes from +6 to -6

3x+6-6= -15-6

3x= -21

divide by 3 for both sides

3x/3= -21/3

x= -7

Answer: x= -7

4 0
4 years ago
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PLEASE HELP!!!<br><br> what is the value of X? -5x=-35
Snezhnost [94]
-5x=-35
divide both sides by -5
-5x/-5 = -35/-5
simplify
x = 7
6 0
3 years ago
Read 2 more answers
Need to be show how to solve step by step. And find a least common multiple
Firlakuza [10]
A cheap way to go about it is, use the LCD and multiply both sides by it.

now, notice the denominators, x, 4, 4x, clearly the LCD is 4x, so let's multiply both sides by that, to do away with the denominators,

\bf \cfrac{5}{x}+\cfrac{3}{4}=\cfrac{8}{4x}\implies \boxed{4x}\left(  \cfrac{5}{x}+\cfrac{3}{4} \right)=\boxed{4x}\cdot \cfrac{8}{4x}\implies 20+3x=8&#10;\\\\\\&#10;3x=-12\implies x=\cfrac{-12}{3}\implies x=-4
8 0
3 years ago
Need help fast I am confuzzled!
suter [353]

-4x - 7 +10x = -7 + 6x

Combine like terms on left side.

6x - 7 = -7 + 6x

Add 7 to both sides.

6x = 6x

Subtract 6x from both sides.

0 = 0

This means there are infinitely many solutions.

6 0
3 years ago
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Guys please which one is the correct answer I need help!
Anika [276]

Answer:

D is your answer

Step-by-step explanation:

4 0
3 years ago
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