91=7(7+x)

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Solution for 91=7(7+x) equation:


Simplifying
91 = 7(7 + x)
91 = (7 * 7 + x * 7)
91 = (49 + 7x)

Solving
91 = 49 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
91 + -7x = 49 + 7x + -7x

Combine like terms: 7x + -7x = 0
91 + -7x = 49 + 0
91 + -7x = 49

Add '-91' to each side of the equation.
91 + -91 + -7x = 49 + -91

Combine like terms: 91 + -91 = 0
0 + -7x = 49 + -91
-7x = 49 + -91

Combine like terms: 49 + -91 = -42
-7x = -42

Divide each side by '-7'.
x = 6

Simplifying
x = 6

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