4+0.3r=r-8

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Solution for 4+0.3r=r-8 equation:


Simplifying
4 + 0.3r = r + -8

Reorder the terms:
4 + 0.3r = -8 + r

Solving
4 + 0.3r = -8 + 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.
4 + 0.3r + -1r = -8 + r + -1r

Combine like terms: 0.3r + -1r = -0.7r
4 + -0.7r = -8 + r + -1r

Combine like terms: r + -1r = 0
4 + -0.7r = -8 + 0
4 + -0.7r = -8

Add '-4' to each side of the equation.
4 + -4 + -0.7r = -8 + -4

Combine like terms: 4 + -4 = 0
0 + -0.7r = -8 + -4
-0.7r = -8 + -4

Combine like terms: -8 + -4 = -12
-0.7r = -12

Divide each side by '-0.7'.
r = 17.14285714

Simplifying
r = 17.14285714

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