3x+7(x+3)=71

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Solution for 3x+7(x+3)=71 equation:


Simplifying
3x + 7(x + 3) = 71

Reorder the terms:
3x + 7(3 + x) = 71
3x + (3 * 7 + x * 7) = 71
3x + (21 + 7x) = 71

Reorder the terms:
21 + 3x + 7x = 71

Combine like terms: 3x + 7x = 10x
21 + 10x = 71

Solving
21 + 10x = 71

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 = 71 + -21

Combine like terms: 21 + -21 = 0
0 + 10x = 71 + -21
10x = 71 + -21

Combine like terms: 71 + -21 = 50
10x = 50

Divide each side by '10'.
x = 5

Simplifying
x = 5

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