Solve the following equation

3r+90=5r

Solve for *r*

3r + 90 = 5r

Group our variables 3r and 5r

subtract 5r from both sides

3r + 90 - 5r = 5r - 5r

-2r + 90 = 0

Group our constants 90 and 0.

subtract 90 from both sides

-2r + 90 - 90 = 0 - 90

-2r = -90

-2r | |

-2 |

= |

-90 |

-2 |

r = 45

r = 45

r = 45

Free Equation and Inequalities Calculator - Solves an equation or inequality with 1 unknown variable and no exponents as well as certain absolute value equations and inequalities such as |x|=c and |ax| = c where a and c are constants. Solves square root, cube root, and other root equations in the form ax^2=c, ax^2 + b = c. Also solves radical equations in the form asqrt(bx) = c. Also solves open sentences and it will solve one step problems and two step equations. 2 step equations and one step equations and multi step equations

This calculator has 1 input.

This calculator has 1 input.

One Step Equations (Division):
cx = b
x = b/c

One Step Equations (Addition): x + c = b x = b - c

One Step Equations (Subtraction): x - c = b x = b + c

For more math formulas, check out our Formula Dossier

One Step Equations (Addition): x + c = b x = b - c

One Step Equations (Subtraction): x - c = b x = b + c

For more math formulas, check out our Formula Dossier

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