Respuesta :

PenguinHelper

We can get the answer to this equation by solving for the variable (r).


7.4 - 9 - 2r = 18


We want to get r on one side, so we want to push everything else to the other side.


-2r = 18 - 7.4 + 9


-2r = 19.6


2r = -19.6


r = -9.8

st4rgrl

The answer to the equation is r=-9.8


First combine the like terms of the equation.

7.4-9-2r=18

7.4+(-9)=-1.6

-1.6-2r=18


Continue by adding 1.6 to both sides of the equation to isolate the variable.

-1.6-2r=18

+1.6 +1.6

-----------------

-2r=19.6


Divide -2 on both sides.

[tex] \frac{-2r}{-2} [/tex] = [tex] \frac{19.6}{-2} [/tex]

r=-9.8

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