7(x-1)-(2-x)=4x+9

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Solution for 7(x-1)-(2-x)=4x+9 equation:


Simplifying
7(x + -1) + -1(2 + -1x) = 4x + 9

Reorder the terms:
7(-1 + x) + -1(2 + -1x) = 4x + 9
(-1 * 7 + x * 7) + -1(2 + -1x) = 4x + 9
(-7 + 7x) + -1(2 + -1x) = 4x + 9
-7 + 7x + (2 * -1 + -1x * -1) = 4x + 9
-7 + 7x + (-2 + 1x) = 4x + 9

Reorder the terms:
-7 + -2 + 7x + 1x = 4x + 9

Combine like terms: -7 + -2 = -9
-9 + 7x + 1x = 4x + 9

Combine like terms: 7x + 1x = 8x
-9 + 8x = 4x + 9

Reorder the terms:
-9 + 8x = 9 + 4x

Solving
-9 + 8x = 9 + 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 + 8x + -4x = 9 + 4x + -4x

Combine like terms: 8x + -4x = 4x
-9 + 4x = 9 + 4x + -4x

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

Add '9' to each side of the equation.
-9 + 9 + 4x = 9 + 9

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

Combine like terms: 9 + 9 = 18
4x = 18

Divide each side by '4'.
x = 4.5

Simplifying
x = 4.5

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