4-7+2r+8r=

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


Simplifying
4 + -7 + 2r + 8r = 0

Combine like terms: 4 + -7 = -3
-3 + 2r + 8r = 0

Combine like terms: 2r + 8r = 10r
-3 + 10r = 0

Solving
-3 + 10r = 0

Solving for variable 'r'.

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

Add '3' to each side of the equation.
-3 + 3 + 10r = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 10r = 0 + 3
10r = 0 + 3

Combine like terms: 0 + 3 = 3
10r = 3

Divide each side by '10'.
r = 0.3

Simplifying
r = 0.3

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