2+3(r-7)-7r=4(r-2)+8

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Solution for 2+3(r-7)-7r=4(r-2)+8 equation:


Simplifying
2 + 3(r + -7) + -7r = 4(r + -2) + 8

Reorder the terms:
2 + 3(-7 + r) + -7r = 4(r + -2) + 8
2 + (-7 * 3 + r * 3) + -7r = 4(r + -2) + 8
2 + (-21 + 3r) + -7r = 4(r + -2) + 8

Combine like terms: 2 + -21 = -19
-19 + 3r + -7r = 4(r + -2) + 8

Combine like terms: 3r + -7r = -4r
-19 + -4r = 4(r + -2) + 8

Reorder the terms:
-19 + -4r = 4(-2 + r) + 8
-19 + -4r = (-2 * 4 + r * 4) + 8
-19 + -4r = (-8 + 4r) + 8

Reorder the terms:
-19 + -4r = -8 + 8 + 4r

Combine like terms: -8 + 8 = 0
-19 + -4r = 0 + 4r
-19 + -4r = 4r

Solving
-19 + -4r = 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.
-19 + -4r + -4r = 4r + -4r

Combine like terms: -4r + -4r = -8r
-19 + -8r = 4r + -4r

Combine like terms: 4r + -4r = 0
-19 + -8r = 0

Add '19' to each side of the equation.
-19 + 19 + -8r = 0 + 19

Combine like terms: -19 + 19 = 0
0 + -8r = 0 + 19
-8r = 0 + 19

Combine like terms: 0 + 19 = 19
-8r = 19

Divide each side by '-8'.
r = -2.375

Simplifying
r = -2.375

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