1.8r+9=1.5r+15

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Solution for 1.8r+9=1.5r+15 equation:


Simplifying
1.8r + 9 = 1.5r + 15

Reorder the terms:
9 + 1.8r = 1.5r + 15

Reorder the terms:
9 + 1.8r = 15 + 1.5r

Solving
9 + 1.8r = 15 + 1.5r

Solving for variable 'r'.

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

Add '-1.5r' to each side of the equation.
9 + 1.8r + -1.5r = 15 + 1.5r + -1.5r

Combine like terms: 1.8r + -1.5r = 0.3r
9 + 0.3r = 15 + 1.5r + -1.5r

Combine like terms: 1.5r + -1.5r = 0.0
9 + 0.3r = 15 + 0.0
9 + 0.3r = 15

Add '-9' to each side of the equation.
9 + -9 + 0.3r = 15 + -9

Combine like terms: 9 + -9 = 0
0 + 0.3r = 15 + -9
0.3r = 15 + -9

Combine like terms: 15 + -9 = 6
0.3r = 6

Divide each side by '0.3'.
r = 20

Simplifying
r = 20

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