5x+10(21-x)=165

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Solution for 5x+10(21-x)=165 equation:


Simplifying
5x + 10(21 + -1x) = 165
5x + (21 * 10 + -1x * 10) = 165
5x + (210 + -10x) = 165

Reorder the terms:
210 + 5x + -10x = 165

Combine like terms: 5x + -10x = -5x
210 + -5x = 165

Solving
210 + -5x = 165

Solving for variable 'x'.

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

Add '-210' to each side of the equation.
210 + -210 + -5x = 165 + -210

Combine like terms: 210 + -210 = 0
0 + -5x = 165 + -210
-5x = 165 + -210

Combine like terms: 165 + -210 = -45
-5x = -45

Divide each side by '-5'.
x = 9

Simplifying
x = 9

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