7(x-1)-2(x+1)=4x

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Solution for 7(x-1)-2(x+1)=4x equation:


Simplifying
7(x + -1) + -2(x + 1) = 4x

Reorder the terms:
7(-1 + x) + -2(x + 1) = 4x
(-1 * 7 + x * 7) + -2(x + 1) = 4x
(-7 + 7x) + -2(x + 1) = 4x

Reorder the terms:
-7 + 7x + -2(1 + x) = 4x
-7 + 7x + (1 * -2 + x * -2) = 4x
-7 + 7x + (-2 + -2x) = 4x

Reorder the terms:
-7 + -2 + 7x + -2x = 4x

Combine like terms: -7 + -2 = -9
-9 + 7x + -2x = 4x

Combine like terms: 7x + -2x = 5x
-9 + 5x = 4x

Solving
-9 + 5x = 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.
-9 + 5x + -4x = 4x + -4x

Combine like terms: 5x + -4x = 1x
-9 + 1x = 4x + -4x

Combine like terms: 4x + -4x = 0
-9 + 1x = 0

Add '9' to each side of the equation.
-9 + 9 + 1x = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 1x = 0 + 9
1x = 0 + 9

Combine like terms: 0 + 9 = 9
1x = 9

Divide each side by '1'.
x = 9

Simplifying
x = 9

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