0.007=0.7r-0.21

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Solution for 0.007=0.7r-0.21 equation: 


Simplifying
0.007 = 0.7r + -0.21

Reorder the terms:
0.007 = -0.21 + 0.7r

Solving
0.007 = -0.21 + 0.7r

Solving for variable 'r'.

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

Add '-0.7r' to each side of the equation.
0.007 + -0.7r = -0.21 + 0.7r + -0.7r

Combine like terms: 0.7r + -0.7r = 0.0
0.007 + -0.7r = -0.21 + 0.0
0.007 + -0.7r = -0.21

Add '-0.007' to each side of the equation.
0.007 + -0.007 + -0.7r = -0.21 + -0.007

Combine like terms: 0.007 + -0.007 = 0.000
0.000 + -0.7r = -0.21 + -0.007
-0.7r = -0.21 + -0.007

Combine like terms: -0.21 + -0.007 = -0.217
-0.7r = -0.217

Divide each side by '-0.7'.
r = 0.31

Simplifying
r = 0.31

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