-7+4(r+7)=5(-2+7r)

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Solution for -7+4(r+7)=5(-2+7r) equation:


Simplifying
-7 + 4(r + 7) = 5(-2 + 7r)

Reorder the terms:
-7 + 4(7 + r) = 5(-2 + 7r)
-7 + (7 * 4 + r * 4) = 5(-2 + 7r)
-7 + (28 + 4r) = 5(-2 + 7r)

Combine like terms: -7 + 28 = 21
21 + 4r = 5(-2 + 7r)
21 + 4r = (-2 * 5 + 7r * 5)
21 + 4r = (-10 + 35r)

Solving
21 + 4r = -10 + 35r

Solving for variable 'r'.

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

Add '-35r' to each side of the equation.
21 + 4r + -35r = -10 + 35r + -35r

Combine like terms: 4r + -35r = -31r
21 + -31r = -10 + 35r + -35r

Combine like terms: 35r + -35r = 0
21 + -31r = -10 + 0
21 + -31r = -10

Add '-21' to each side of the equation.
21 + -21 + -31r = -10 + -21

Combine like terms: 21 + -21 = 0
0 + -31r = -10 + -21
-31r = -10 + -21

Combine like terms: -10 + -21 = -31
-31r = -31

Divide each side by '-31'.
r = 1

Simplifying
r = 1

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