7x+7(x+9)=161

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Solution for 7x+7(x+9)=161 equation:


Simplifying
7x + 7(x + 9) = 161

Reorder the terms:
7x + 7(9 + x) = 161
7x + (9 * 7 + x * 7) = 161
7x + (63 + 7x) = 161

Reorder the terms:
63 + 7x + 7x = 161

Combine like terms: 7x + 7x = 14x
63 + 14x = 161

Solving
63 + 14x = 161

Solving for variable 'x'.

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

Add '-63' to each side of the equation.
63 + -63 + 14x = 161 + -63

Combine like terms: 63 + -63 = 0
0 + 14x = 161 + -63
14x = 161 + -63

Combine like terms: 161 + -63 = 98
14x = 98

Divide each side by '14'.
x = 7

Simplifying
x = 7

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