1.5=2r+(r-3)

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Solution for 1.5=2r+(r-3) equation:


Simplifying
1.5 = 2r + (r + -3)

Reorder the terms:
1.5 = 2r + (-3 + r)

Remove parenthesis around (-3 + r)
1.5 = 2r + -3 + r

Reorder the terms:
1.5 = -3 + 2r + r

Combine like terms: 2r + r = 3r
1.5 = -3 + 3r

Solving
1.5 = -3 + 3r

Solving for variable 'r'.

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

Add '-3r' to each side of the equation.
1.5 + -3r = -3 + 3r + -3r

Combine like terms: 3r + -3r = 0
1.5 + -3r = -3 + 0
1.5 + -3r = -3

Add '-1.5' to each side of the equation.
1.5 + -1.5 + -3r = -3 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + -3r = -3 + -1.5
-3r = -3 + -1.5

Combine like terms: -3 + -1.5 = -4.5
-3r = -4.5

Divide each side by '-3'.
r = 1.5

Simplifying
r = 1.5

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