15x+30(x+21)=100

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Solution for 15x+30(x+21)=100 equation:


Simplifying
15x + 30(x + 21) = 100

Reorder the terms:
15x + 30(21 + x) = 100
15x + (21 * 30 + x * 30) = 100
15x + (630 + 30x) = 100

Reorder the terms:
630 + 15x + 30x = 100

Combine like terms: 15x + 30x = 45x
630 + 45x = 100

Solving
630 + 45x = 100

Solving for variable 'x'.

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

Add '-630' to each side of the equation.
630 + -630 + 45x = 100 + -630

Combine like terms: 630 + -630 = 0
0 + 45x = 100 + -630
45x = 100 + -630

Combine like terms: 100 + -630 = -530
45x = -530

Divide each side by '45'.
x = -11.77777778

Simplifying
x = -11.77777778

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