-7+2(4r+7)=40-3r

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Solution for -7+2(4r+7)=40-3r equation:


Simplifying
-7 + 2(4r + 7) = 40 + -3r

Reorder the terms:
-7 + 2(7 + 4r) = 40 + -3r
-7 + (7 * 2 + 4r * 2) = 40 + -3r
-7 + (14 + 8r) = 40 + -3r

Combine like terms: -7 + 14 = 7
7 + 8r = 40 + -3r

Solving
7 + 8r = 40 + -3r

Solving for variable 'r'.

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

Add '3r' to each side of the equation.
7 + 8r + 3r = 40 + -3r + 3r

Combine like terms: 8r + 3r = 11r
7 + 11r = 40 + -3r + 3r

Combine like terms: -3r + 3r = 0
7 + 11r = 40 + 0
7 + 11r = 40

Add '-7' to each side of the equation.
7 + -7 + 11r = 40 + -7

Combine like terms: 7 + -7 = 0
0 + 11r = 40 + -7
11r = 40 + -7

Combine like terms: 40 + -7 = 33
11r = 33

Divide each side by '11'.
r = 3

Simplifying
r = 3

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