-7(5+3r)+4=23-3r

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Solution for -7(5+3r)+4=23-3r equation:


Simplifying
-7(5 + 3r) + 4 = 23 + -3r
(5 * -7 + 3r * -7) + 4 = 23 + -3r
(-35 + -21r) + 4 = 23 + -3r

Reorder the terms:
-35 + 4 + -21r = 23 + -3r

Combine like terms: -35 + 4 = -31
-31 + -21r = 23 + -3r

Solving
-31 + -21r = 23 + -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.
-31 + -21r + 3r = 23 + -3r + 3r

Combine like terms: -21r + 3r = -18r
-31 + -18r = 23 + -3r + 3r

Combine like terms: -3r + 3r = 0
-31 + -18r = 23 + 0
-31 + -18r = 23

Add '31' to each side of the equation.
-31 + 31 + -18r = 23 + 31

Combine like terms: -31 + 31 = 0
0 + -18r = 23 + 31
-18r = 23 + 31

Combine like terms: 23 + 31 = 54
-18r = 54

Divide each side by '-18'.
r = -3

Simplifying
r = -3

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