3(7x+15)=8x+9

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Solution for 3(7x+15)=8x+9 equation:


Simplifying
3(7x + 15) = 8x + 9

Reorder the terms:
3(15 + 7x) = 8x + 9
(15 * 3 + 7x * 3) = 8x + 9
(45 + 21x) = 8x + 9

Reorder the terms:
45 + 21x = 9 + 8x

Solving
45 + 21x = 9 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
45 + 21x + -8x = 9 + 8x + -8x

Combine like terms: 21x + -8x = 13x
45 + 13x = 9 + 8x + -8x

Combine like terms: 8x + -8x = 0
45 + 13x = 9 + 0
45 + 13x = 9

Add '-45' to each side of the equation.
45 + -45 + 13x = 9 + -45

Combine like terms: 45 + -45 = 0
0 + 13x = 9 + -45
13x = 9 + -45

Combine like terms: 9 + -45 = -36
13x = -36

Divide each side by '13'.
x = -2.769230769

Simplifying
x = -2.769230769

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