105=7(r+8)

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Solution for 105=7(r+8) equation:


Simplifying
105 = 7(r + 8)

Reorder the terms:
105 = 7(8 + r)
105 = (8 * 7 + r * 7)
105 = (56 + 7r)

Solving
105 = 56 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
105 + -7r = 56 + 7r + -7r

Combine like terms: 7r + -7r = 0
105 + -7r = 56 + 0
105 + -7r = 56

Add '-105' to each side of the equation.
105 + -105 + -7r = 56 + -105

Combine like terms: 105 + -105 = 0
0 + -7r = 56 + -105
-7r = 56 + -105

Combine like terms: 56 + -105 = -49
-7r = -49

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

Simplifying
r = 7

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