3(x-1)+7=40

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Solution for 3(x-1)+7=40 equation:


Simplifying
3(x + -1) + 7 = 40

Reorder the terms:
3(-1 + x) + 7 = 40
(-1 * 3 + x * 3) + 7 = 40
(-3 + 3x) + 7 = 40

Reorder the terms:
-3 + 7 + 3x = 40

Combine like terms: -3 + 7 = 4
4 + 3x = 40

Solving
4 + 3x = 40

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + 3x = 40 + -4

Combine like terms: 4 + -4 = 0
0 + 3x = 40 + -4
3x = 40 + -4

Combine like terms: 40 + -4 = 36
3x = 36

Divide each side by '3'.
x = 12

Simplifying
x = 12

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