7x+3(x-7)=89

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Solution for 7x+3(x-7)=89 equation:


Simplifying
7x + 3(x + -7) = 89

Reorder the terms:
7x + 3(-7 + x) = 89
7x + (-7 * 3 + x * 3) = 89
7x + (-21 + 3x) = 89

Reorder the terms:
-21 + 7x + 3x = 89

Combine like terms: 7x + 3x = 10x
-21 + 10x = 89

Solving
-21 + 10x = 89

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + 10x = 89 + 21

Combine like terms: -21 + 21 = 0
0 + 10x = 89 + 21
10x = 89 + 21

Combine like terms: 89 + 21 = 110
10x = 110

Divide each side by '10'.
x = 11

Simplifying
x = 11

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