8r+4=5r+8(2r+7)

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Solution for 8r+4=5r+8(2r+7) equation:


Simplifying
8r + 4 = 5r + 8(2r + 7)

Reorder the terms:
4 + 8r = 5r + 8(2r + 7)

Reorder the terms:
4 + 8r = 5r + 8(7 + 2r)
4 + 8r = 5r + (7 * 8 + 2r * 8)
4 + 8r = 5r + (56 + 16r)

Reorder the terms:
4 + 8r = 56 + 5r + 16r

Combine like terms: 5r + 16r = 21r
4 + 8r = 56 + 21r

Solving
4 + 8r = 56 + 21r

Solving for variable 'r'.

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

Add '-21r' to each side of the equation.
4 + 8r + -21r = 56 + 21r + -21r

Combine like terms: 8r + -21r = -13r
4 + -13r = 56 + 21r + -21r

Combine like terms: 21r + -21r = 0
4 + -13r = 56 + 0
4 + -13r = 56

Add '-4' to each side of the equation.
4 + -4 + -13r = 56 + -4

Combine like terms: 4 + -4 = 0
0 + -13r = 56 + -4
-13r = 56 + -4

Combine like terms: 56 + -4 = 52
-13r = 52

Divide each side by '-13'.
r = -4

Simplifying
r = -4

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