3(x+2)+7(x-1)=12

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Solution for 3(x+2)+7(x-1)=12 equation:


Simplifying
3(x + 2) + 7(x + -1) = 12

Reorder the terms:
3(2 + x) + 7(x + -1) = 12
(2 * 3 + x * 3) + 7(x + -1) = 12
(6 + 3x) + 7(x + -1) = 12

Reorder the terms:
6 + 3x + 7(-1 + x) = 12
6 + 3x + (-1 * 7 + x * 7) = 12
6 + 3x + (-7 + 7x) = 12

Reorder the terms:
6 + -7 + 3x + 7x = 12

Combine like terms: 6 + -7 = -1
-1 + 3x + 7x = 12

Combine like terms: 3x + 7x = 10x
-1 + 10x = 12

Solving
-1 + 10x = 12

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 + 10x = 12 + 1

Combine like terms: -1 + 1 = 0
0 + 10x = 12 + 1
10x = 12 + 1

Combine like terms: 12 + 1 = 13
10x = 13

Divide each side by '10'.
x = 1.3

Simplifying
x = 1.3

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