7r+3=5(r-4)

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Solution for 7r+3=5(r-4) equation:


Simplifying
7r + 3 = 5(r + -4)

Reorder the terms:
3 + 7r = 5(r + -4)

Reorder the terms:
3 + 7r = 5(-4 + r)
3 + 7r = (-4 * 5 + r * 5)
3 + 7r = (-20 + 5r)

Solving
3 + 7r = -20 + 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
3 + 7r + -5r = -20 + 5r + -5r

Combine like terms: 7r + -5r = 2r
3 + 2r = -20 + 5r + -5r

Combine like terms: 5r + -5r = 0
3 + 2r = -20 + 0
3 + 2r = -20

Add '-3' to each side of the equation.
3 + -3 + 2r = -20 + -3

Combine like terms: 3 + -3 = 0
0 + 2r = -20 + -3
2r = -20 + -3

Combine like terms: -20 + -3 = -23
2r = -23

Divide each side by '2'.
r = -11.5

Simplifying
r = -11.5

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