-40=5(r+7)+5(1+r)

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Solution for -40=5(r+7)+5(1+r) equation:


Simplifying
-40 = 5(r + 7) + 5(1 + r)

Reorder the terms:
-40 = 5(7 + r) + 5(1 + r)
-40 = (7 * 5 + r * 5) + 5(1 + r)
-40 = (35 + 5r) + 5(1 + r)
-40 = 35 + 5r + (1 * 5 + r * 5)
-40 = 35 + 5r + (5 + 5r)

Reorder the terms:
-40 = 35 + 5 + 5r + 5r

Combine like terms: 35 + 5 = 40
-40 = 40 + 5r + 5r

Combine like terms: 5r + 5r = 10r
-40 = 40 + 10r

Solving
-40 = 40 + 10r

Solving for variable 'r'.

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

Add '-10r' to each side of the equation.
-40 + -10r = 40 + 10r + -10r

Combine like terms: 10r + -10r = 0
-40 + -10r = 40 + 0
-40 + -10r = 40

Add '40' to each side of the equation.
-40 + 40 + -10r = 40 + 40

Combine like terms: -40 + 40 = 0
0 + -10r = 40 + 40
-10r = 40 + 40

Combine like terms: 40 + 40 = 80
-10r = 80

Divide each side by '-10'.
r = -8

Simplifying
r = -8

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