140=r*2

Solution for 140=r*2 equation:

Simplifying
140 = r * 2

Reorder the terms for easier multiplication:
140 = 2r

Solving
140 = 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
140 + -2r = 2r + -2r

Combine like terms: 2r + -2r = 0
140 + -2r = 0

Add '-140' to each side of the equation.
140 + -140 + -2r = 0 + -140

Combine like terms: 140 + -140 = 0
0 + -2r = 0 + -140
-2r = 0 + -140

Combine like terms: 0 + -140 = -140
-2r = -140

Divide each side by '-2'.
r = 70

Simplifying
r = 70