5=2.9+r

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Solution for 5=2.9+r equation:


Simplifying
5 = 2.9 + r

Solving
5 = 2.9 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
5 + -1r = 2.9 + r + -1r

Combine like terms: r + -1r = 0
5 + -1r = 2.9 + 0
5 + -1r = 2.9

Add '-5' to each side of the equation.
5 + -5 + -1r = 2.9 + -5

Combine like terms: 5 + -5 = 0
0 + -1r = 2.9 + -5
-1r = 2.9 + -5

Combine like terms: 2.9 + -5 = -2.1
-1r = -2.1

Divide each side by '-1'.
r = 2.1

Simplifying
r = 2.1

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