7.85=2(3.14)+r

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Solution for 7.85=2(3.14)+r equation:


Simplifying
7.85 = 2(3.14) + r

Multiply 2 * 3.14
7.85 = 6.28 + r

Solving
7.85 = 6.28 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
7.85 + -1r = 6.28 + r + -1r

Combine like terms: r + -1r = 0
7.85 + -1r = 6.28 + 0
7.85 + -1r = 6.28

Add '-7.85' to each side of the equation.
7.85 + -7.85 + -1r = 6.28 + -7.85

Combine like terms: 7.85 + -7.85 = 0.00
0.00 + -1r = 6.28 + -7.85
-1r = 6.28 + -7.85

Combine like terms: 6.28 + -7.85 = -1.57
-1r = -1.57

Divide each side by '-1'.
r = 1.57

Simplifying
r = 1.57

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