3(x-7)=-4(x-7)

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Solution for 3(x-7)=-4(x-7) equation:


Simplifying
3(x + -7) = -4(x + -7)

Reorder the terms:
3(-7 + x) = -4(x + -7)
(-7 * 3 + x * 3) = -4(x + -7)
(-21 + 3x) = -4(x + -7)

Reorder the terms:
-21 + 3x = -4(-7 + x)
-21 + 3x = (-7 * -4 + x * -4)
-21 + 3x = (28 + -4x)

Solving
-21 + 3x = 28 + -4x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '4x' to each side of the equation.
-21 + 3x + 4x = 28 + -4x + 4x

Combine like terms: 3x + 4x = 7x
-21 + 7x = 28 + -4x + 4x

Combine like terms: -4x + 4x = 0
-21 + 7x = 28 + 0
-21 + 7x = 28

Add '21' to each side of the equation.
-21 + 21 + 7x = 28 + 21

Combine like terms: -21 + 21 = 0
0 + 7x = 28 + 21
7x = 28 + 21

Combine like terms: 28 + 21 = 49
7x = 49

Divide each side by '7'.
x = 7

Simplifying
x = 7

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