7+3r=4r-20

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Solution for 7+3r=4r-20 equation:


Simplifying
7 + 3r = 4r + -20

Reorder the terms:
7 + 3r = -20 + 4r

Solving
7 + 3r = -20 + 4r

Solving for variable 'r'.

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

Add '-4r' to each side of the equation.
7 + 3r + -4r = -20 + 4r + -4r

Combine like terms: 3r + -4r = -1r
7 + -1r = -20 + 4r + -4r

Combine like terms: 4r + -4r = 0
7 + -1r = -20 + 0
7 + -1r = -20

Add '-7' to each side of the equation.
7 + -7 + -1r = -20 + -7

Combine like terms: 7 + -7 = 0
0 + -1r = -20 + -7
-1r = -20 + -7

Combine like terms: -20 + -7 = -27
-1r = -27

Divide each side by '-1'.
r = 27

Simplifying
r = 27

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