2r+7=3(r+4)

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


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

Reorder the terms:
7 + 2r = 3(r + 4)

Reorder the terms:
7 + 2r = 3(4 + r)
7 + 2r = (4 * 3 + r * 3)
7 + 2r = (12 + 3r)

Solving
7 + 2r = 12 + 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 + 2r + -3r = 12 + 3r + -3r

Combine like terms: 2r + -3r = -1r
7 + -1r = 12 + 3r + -3r

Combine like terms: 3r + -3r = 0
7 + -1r = 12 + 0
7 + -1r = 12

Add '-7' to each side of the equation.
7 + -7 + -1r = 12 + -7

Combine like terms: 7 + -7 = 0
0 + -1r = 12 + -7
-1r = 12 + -7

Combine like terms: 12 + -7 = 5
-1r = 5

Divide each side by '-1'.
r = -5

Simplifying
r = -5

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