178=-r-4(-1+7r)

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Solution for 178=-r-4(-1+7r) equation:


Simplifying
178 = -1r + -4(-1 + 7r)
178 = -1r + (-1 * -4 + 7r * -4)
178 = -1r + (4 + -28r)

Reorder the terms:
178 = 4 + -1r + -28r

Combine like terms: -1r + -28r = -29r
178 = 4 + -29r

Solving
178 = 4 + -29r

Solving for variable 'r'.

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

Add '29r' to each side of the equation.
178 + 29r = 4 + -29r + 29r

Combine like terms: -29r + 29r = 0
178 + 29r = 4 + 0
178 + 29r = 4

Add '-178' to each side of the equation.
178 + -178 + 29r = 4 + -178

Combine like terms: 178 + -178 = 0
0 + 29r = 4 + -178
29r = 4 + -178

Combine like terms: 4 + -178 = -174
29r = -174

Divide each side by '29'.
r = -6

Simplifying
r = -6

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