210=7(15+x)

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Solution for 210=7(15+x) equation:


Simplifying
210 = 7(15 + x)
210 = (15 * 7 + x * 7)
210 = (105 + 7x)

Solving
210 = 105 + 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.
210 + -7x = 105 + 7x + -7x

Combine like terms: 7x + -7x = 0
210 + -7x = 105 + 0
210 + -7x = 105

Add '-210' to each side of the equation.
210 + -210 + -7x = 105 + -210

Combine like terms: 210 + -210 = 0
0 + -7x = 105 + -210
-7x = 105 + -210

Combine like terms: 105 + -210 = -105
-7x = -105

Divide each side by '-7'.
x = 15

Simplifying
x = 15

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