-4r+3(2r-5)=31

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Solution for -4r+3(2r-5)=31 equation:


Simplifying
-4r + 3(2r + -5) = 31

Reorder the terms:
-4r + 3(-5 + 2r) = 31
-4r + (-5 * 3 + 2r * 3) = 31
-4r + (-15 + 6r) = 31

Reorder the terms:
-15 + -4r + 6r = 31

Combine like terms: -4r + 6r = 2r
-15 + 2r = 31

Solving
-15 + 2r = 31

Solving for variable 'r'.

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

Add '15' to each side of the equation.
-15 + 15 + 2r = 31 + 15

Combine like terms: -15 + 15 = 0
0 + 2r = 31 + 15
2r = 31 + 15

Combine like terms: 31 + 15 = 46
2r = 46

Divide each side by '2'.
r = 23

Simplifying
r = 23

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