Question 934384: How do you do two step equations when the variable is the numerator and is added by a number? Found 2 solutions by TimothyLamb, josgarithmetic:Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! x = unknown variable
a = known number
b = known number
c = known number
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(x + a)/b = c
x + a = b*c
x = b*c - a
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x, an unknown variable.
Other variables as constants.
This example fits your description:
Objective is solve for the unknown x. Use number properties to isolate x on one side and all constants on the other side. Look at how x appears in the original equation, and identify everything that was done to it to make the equation.
Started with x;
Added k;
Multiplied by ;
The result gave r.
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Do all the steps in REVERSE order and use the INVERSES to do it.
Starting now with the original equation:
Multiply by the multiplicative inverse of ;
Add the additive inverse of ;
DONE.
Those steps should look like this or consistant with:
(