12(4r-5r)+20=19r-15+48r

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Solution for 12(4r-5r)+20=19r-15+48r equation:


Simplifying
12(4r + -5r) + 20 = 19r + -15 + 48r

Combine like terms: 4r + -5r = -1r
12(-1r) + 20 = 19r + -15 + 48r

Remove parenthesis around (-1r)
12 * -1r + 20 = 19r + -15 + 48r

Multiply 12 * -1
-12r + 20 = 19r + -15 + 48r

Reorder the terms:
20 + -12r = 19r + -15 + 48r

Reorder the terms:
20 + -12r = -15 + 19r + 48r

Combine like terms: 19r + 48r = 67r
20 + -12r = -15 + 67r

Solving
20 + -12r = -15 + 67r

Solving for variable 'r'.

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

Add '-67r' to each side of the equation.
20 + -12r + -67r = -15 + 67r + -67r

Combine like terms: -12r + -67r = -79r
20 + -79r = -15 + 67r + -67r

Combine like terms: 67r + -67r = 0
20 + -79r = -15 + 0
20 + -79r = -15

Add '-20' to each side of the equation.
20 + -20 + -79r = -15 + -20

Combine like terms: 20 + -20 = 0
0 + -79r = -15 + -20
-79r = -15 + -20

Combine like terms: -15 + -20 = -35
-79r = -35

Divide each side by '-79'.
r = 0.4430379747

Simplifying
r = 0.4430379747

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