7=3(x-1)+4(x-1)

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Solution for 7=3(x-1)+4(x-1) equation:


Simplifying
7 = 3(x + -1) + 4(x + -1)

Reorder the terms:
7 = 3(-1 + x) + 4(x + -1)
7 = (-1 * 3 + x * 3) + 4(x + -1)
7 = (-3 + 3x) + 4(x + -1)

Reorder the terms:
7 = -3 + 3x + 4(-1 + x)
7 = -3 + 3x + (-1 * 4 + x * 4)
7 = -3 + 3x + (-4 + 4x)

Reorder the terms:
7 = -3 + -4 + 3x + 4x

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

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

Solving
7 = -7 + 7x

Solving for variable 'x'.

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

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

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

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

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

Combine like terms: -7 + -7 = -14
-7x = -14

Divide each side by '-7'.
x = 2

Simplifying
x = 2

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