3.9-0.2r=5r-(6r-3.4)

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Solution for 3.9-0.2r=5r-(6r-3.4) equation:


Simplifying
3.9 + -0.2r = 5r + -1(6r + -3.4)

Reorder the terms:
3.9 + -0.2r = 5r + -1(-3.4 + 6r)
3.9 + -0.2r = 5r + (-3.4 * -1 + 6r * -1)
3.9 + -0.2r = 5r + (3.4 + -6r)

Reorder the terms:
3.9 + -0.2r = 3.4 + 5r + -6r

Combine like terms: 5r + -6r = -1r
3.9 + -0.2r = 3.4 + -1r

Solving
3.9 + -0.2r = 3.4 + -1r

Solving for variable 'r'.

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

Add 'r' to each side of the equation.
3.9 + -0.2r + r = 3.4 + -1r + r

Combine like terms: -0.2r + r = 0.8r
3.9 + 0.8r = 3.4 + -1r + r

Combine like terms: -1r + r = 0
3.9 + 0.8r = 3.4 + 0
3.9 + 0.8r = 3.4

Add '-3.9' to each side of the equation.
3.9 + -3.9 + 0.8r = 3.4 + -3.9

Combine like terms: 3.9 + -3.9 = 0.0
0.0 + 0.8r = 3.4 + -3.9
0.8r = 3.4 + -3.9

Combine like terms: 3.4 + -3.9 = -0.5
0.8r = -0.5

Divide each side by '0.8'.
r = -0.625

Simplifying
r = -0.625

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