-3(-10-3r)=-(18-3r)

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Solution for -3(-10-3r)=-(18-3r) equation:


Simplifying
-3(-10 + -3r) = -1(18 + -3r)
(-10 * -3 + -3r * -3) = -1(18 + -3r)
(30 + 9r) = -1(18 + -3r)
30 + 9r = (18 * -1 + -3r * -1)
30 + 9r = (-18 + 3r)

Solving
30 + 9r = -18 + 3r

Solving for variable 'r'.

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

Add '-3r' to each side of the equation.
30 + 9r + -3r = -18 + 3r + -3r

Combine like terms: 9r + -3r = 6r
30 + 6r = -18 + 3r + -3r

Combine like terms: 3r + -3r = 0
30 + 6r = -18 + 0
30 + 6r = -18

Add '-30' to each side of the equation.
30 + -30 + 6r = -18 + -30

Combine like terms: 30 + -30 = 0
0 + 6r = -18 + -30
6r = -18 + -30

Combine like terms: -18 + -30 = -48
6r = -48

Divide each side by '6'.
r = -8

Simplifying
r = -8

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