3-8r=4-7r

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Solution for 3-8r=4-7r equation:


Simplifying
3 + -8r = 4 + -7r

Solving
3 + -8r = 4 + -7r

Solving for variable 'r'.

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

Add '7r' to each side of the equation.
3 + -8r + 7r = 4 + -7r + 7r

Combine like terms: -8r + 7r = -1r
3 + -1r = 4 + -7r + 7r

Combine like terms: -7r + 7r = 0
3 + -1r = 4 + 0
3 + -1r = 4

Add '-3' to each side of the equation.
3 + -3 + -1r = 4 + -3

Combine like terms: 3 + -3 = 0
0 + -1r = 4 + -3
-1r = 4 + -3

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

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

Simplifying
r = -1

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