225=8(3r+8)-7

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Solution for 225=8(3r+8)-7 equation:


Simplifying
225 = 8(3r + 8) + -7

Reorder the terms:
225 = 8(8 + 3r) + -7
225 = (8 * 8 + 3r * 8) + -7
225 = (64 + 24r) + -7

Reorder the terms:
225 = 64 + -7 + 24r

Combine like terms: 64 + -7 = 57
225 = 57 + 24r

Solving
225 = 57 + 24r

Solving for variable 'r'.

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

Add '-24r' to each side of the equation.
225 + -24r = 57 + 24r + -24r

Combine like terms: 24r + -24r = 0
225 + -24r = 57 + 0
225 + -24r = 57

Add '-225' to each side of the equation.
225 + -225 + -24r = 57 + -225

Combine like terms: 225 + -225 = 0
0 + -24r = 57 + -225
-24r = 57 + -225

Combine like terms: 57 + -225 = -168
-24r = -168

Divide each side by '-24'.
r = 7

Simplifying
r = 7

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