-2(3r+1)-4r=40-3r

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Solution for -2(3r+1)-4r=40-3r equation:


Simplifying
-2(3r + 1) + -4r = 40 + -3r

Reorder the terms:
-2(1 + 3r) + -4r = 40 + -3r
(1 * -2 + 3r * -2) + -4r = 40 + -3r
(-2 + -6r) + -4r = 40 + -3r

Combine like terms: -6r + -4r = -10r
-2 + -10r = 40 + -3r

Solving
-2 + -10r = 40 + -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.
-2 + -10r + 3r = 40 + -3r + 3r

Combine like terms: -10r + 3r = -7r
-2 + -7r = 40 + -3r + 3r

Combine like terms: -3r + 3r = 0
-2 + -7r = 40 + 0
-2 + -7r = 40

Add '2' to each side of the equation.
-2 + 2 + -7r = 40 + 2

Combine like terms: -2 + 2 = 0
0 + -7r = 40 + 2
-7r = 40 + 2

Combine like terms: 40 + 2 = 42
-7r = 42

Divide each side by '-7'.
r = -6

Simplifying
r = -6

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