210=3(x+7.00)+3(x+12.00)

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Solution for 210=3(x+7.00)+3(x+12.00) equation:


Simplifying
210 = 3(x + 7.00) + 3(x + 12.00)

Reorder the terms:
210 = 3(7.00 + x) + 3(x + 12.00)
210 = (7.00 * 3 + x * 3) + 3(x + 12.00)
210 = (21 + 3x) + 3(x + 12.00)

Reorder the terms:
210 = 21 + 3x + 3(12.00 + x)
210 = 21 + 3x + (12.00 * 3 + x * 3)
210 = 21 + 3x + (36 + 3x)

Reorder the terms:
210 = 21 + 36 + 3x + 3x

Combine like terms: 21 + 36 = 57
210 = 57 + 3x + 3x

Combine like terms: 3x + 3x = 6x
210 = 57 + 6x

Solving
210 = 57 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
210 + -6x = 57 + 6x + -6x

Combine like terms: 6x + -6x = 0
210 + -6x = 57 + 0
210 + -6x = 57

Add '-210' to each side of the equation.
210 + -210 + -6x = 57 + -210

Combine like terms: 210 + -210 = 0
0 + -6x = 57 + -210
-6x = 57 + -210

Combine like terms: 57 + -210 = -153
-6x = -153

Divide each side by '-6'.
x = 25.5

Simplifying
x = 25.5

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