3r+4=18r+7

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Solution for 3r+4=18r+7 equation:


Simplifying
3r + 4 = 18r + 7

Reorder the terms:
4 + 3r = 18r + 7

Reorder the terms:
4 + 3r = 7 + 18r

Solving
4 + 3r = 7 + 18r

Solving for variable 'r'.

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

Add '-18r' to each side of the equation.
4 + 3r + -18r = 7 + 18r + -18r

Combine like terms: 3r + -18r = -15r
4 + -15r = 7 + 18r + -18r

Combine like terms: 18r + -18r = 0
4 + -15r = 7 + 0
4 + -15r = 7

Add '-4' to each side of the equation.
4 + -4 + -15r = 7 + -4

Combine like terms: 4 + -4 = 0
0 + -15r = 7 + -4
-15r = 7 + -4

Combine like terms: 7 + -4 = 3
-15r = 3

Divide each side by '-15'.
r = -0.2

Simplifying
r = -0.2

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