-3(x-1)-(x+2)=7

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Solution for -3(x-1)-(x+2)=7 equation: 


Simplifying
-3(x + -1) + -1(x + 2) = 7

Reorder the terms:
-3(-1 + x) + -1(x + 2) = 7
(-1 * -3 + x * -3) + -1(x + 2) = 7
(3 + -3x) + -1(x + 2) = 7

Reorder the terms:
3 + -3x + -1(2 + x) = 7
3 + -3x + (2 * -1 + x * -1) = 7
3 + -3x + (-2 + -1x) = 7

Reorder the terms:
3 + -2 + -3x + -1x = 7

Combine like terms: 3 + -2 = 1
1 + -3x + -1x = 7

Combine like terms: -3x + -1x = -4x
1 + -4x = 7

Solving
1 + -4x = 7

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + -4x = 7 + -1

Combine like terms: 1 + -1 = 0
0 + -4x = 7 + -1
-4x = 7 + -1

Combine like terms: 7 + -1 = 6
-4x = 6

Divide each side by '-4'.
x = -1.5

Simplifying
x = -1.5

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