-3(3x+15)-(10+x)=9

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Solution for -3(3x+15)-(10+x)=9 equation:


Simplifying
-3(3x + 15) + -1(10 + x) = 9

Reorder the terms:
-3(15 + 3x) + -1(10 + x) = 9
(15 * -3 + 3x * -3) + -1(10 + x) = 9
(-45 + -9x) + -1(10 + x) = 9
-45 + -9x + (10 * -1 + x * -1) = 9
-45 + -9x + (-10 + -1x) = 9

Reorder the terms:
-45 + -10 + -9x + -1x = 9

Combine like terms: -45 + -10 = -55
-55 + -9x + -1x = 9

Combine like terms: -9x + -1x = -10x
-55 + -10x = 9

Solving
-55 + -10x = 9

Solving for variable 'x'.

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

Add '55' to each side of the equation.
-55 + 55 + -10x = 9 + 55

Combine like terms: -55 + 55 = 0
0 + -10x = 9 + 55
-10x = 9 + 55

Combine like terms: 9 + 55 = 64
-10x = 64

Divide each side by '-10'.
x = -6.4

Simplifying
x = -6.4

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