8r+4=7r+9

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Solution for 8r+4=7r+9 equation:


Simplifying
8r + 4 = 7r + 9

Reorder the terms:
4 + 8r = 7r + 9

Reorder the terms:
4 + 8r = 9 + 7r

Solving
4 + 8r = 9 + 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.
4 + 8r + -7r = 9 + 7r + -7r

Combine like terms: 8r + -7r = 1r
4 + 1r = 9 + 7r + -7r

Combine like terms: 7r + -7r = 0
4 + 1r = 9 + 0
4 + 1r = 9

Add '-4' to each side of the equation.
4 + -4 + 1r = 9 + -4

Combine like terms: 4 + -4 = 0
0 + 1r = 9 + -4
1r = 9 + -4

Combine like terms: 9 + -4 = 5
1r = 5

Divide each side by '1'.
r = 5

Simplifying
r = 5

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