7(7+x)=8(21)

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Solution for 7(7+x)=8(21) equation: 


Simplifying
7(7 + x) = 8(21)
(7 * 7 + x * 7) = 8(21)
(49 + 7x) = 8(21)

Multiply 8 * 21
49 + 7x = 168

Solving
49 + 7x = 168

Solving for variable 'x'.

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

Add '-49' to each side of the equation.
49 + -49 + 7x = 168 + -49

Combine like terms: 49 + -49 = 0
0 + 7x = 168 + -49
7x = 168 + -49

Combine like terms: 168 + -49 = 119
7x = 119

Divide each side by '7'.
x = 17

Simplifying
x = 17

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