3r-31=7(1-5r)

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Solution for 3r-31=7(1-5r) equation:


Simplifying
3r + -31 = 7(1 + -5r)

Reorder the terms:
-31 + 3r = 7(1 + -5r)
-31 + 3r = (1 * 7 + -5r * 7)
-31 + 3r = (7 + -35r)

Solving
-31 + 3r = 7 + -35r

Solving for variable 'r'.

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

Add '35r' to each side of the equation.
-31 + 3r + 35r = 7 + -35r + 35r

Combine like terms: 3r + 35r = 38r
-31 + 38r = 7 + -35r + 35r

Combine like terms: -35r + 35r = 0
-31 + 38r = 7 + 0
-31 + 38r = 7

Add '31' to each side of the equation.
-31 + 31 + 38r = 7 + 31

Combine like terms: -31 + 31 = 0
0 + 38r = 7 + 31
38r = 7 + 31

Combine like terms: 7 + 31 = 38
38r = 38

Divide each side by '38'.
r = 1

Simplifying
r = 1

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