7(x-2)+6(x+1)=20

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Solution for 7(x-2)+6(x+1)=20 equation:


Simplifying
7(x + -2) + 6(x + 1) = 20

Reorder the terms:
7(-2 + x) + 6(x + 1) = 20
(-2 * 7 + x * 7) + 6(x + 1) = 20
(-14 + 7x) + 6(x + 1) = 20

Reorder the terms:
-14 + 7x + 6(1 + x) = 20
-14 + 7x + (1 * 6 + x * 6) = 20
-14 + 7x + (6 + 6x) = 20

Reorder the terms:
-14 + 6 + 7x + 6x = 20

Combine like terms: -14 + 6 = -8
-8 + 7x + 6x = 20

Combine like terms: 7x + 6x = 13x
-8 + 13x = 20

Solving
-8 + 13x = 20

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + 13x = 20 + 8

Combine like terms: -8 + 8 = 0
0 + 13x = 20 + 8
13x = 20 + 8

Combine like terms: 20 + 8 = 28
13x = 28

Divide each side by '13'.
x = 2.153846154

Simplifying
x = 2.153846154

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