4.2(3.5r-0.25)=

Solution for 4.2(3.5r-0.25)= equation:

Simplifying
4.2(3.5r + -0.25) = 0

Reorder the terms:
4.2(-0.25 + 3.5r) = 0
(-0.25 * 4.2 + 3.5r * 4.2) = 0
(-1.05 + 14.7r) = 0

Solving
-1.05 + 14.7r = 0

Solving for variable 'r'.

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

Add '1.05' to each side of the equation.
-1.05 + 1.05 + 14.7r = 0 + 1.05

Combine like terms: -1.05 + 1.05 = 0.00
0.00 + 14.7r = 0 + 1.05
14.7r = 0 + 1.05

Combine like terms: 0 + 1.05 = 1.05
14.7r = 1.05

Divide each side by '14.7'.
r = 0.07142857143

Simplifying
r = 0.07142857143