Asked by patricia
I'm having difficulty solving 0.7y+9=y+15?????
I know the answer is 20 but can't remember procedure.
Do I change the decimal to a fraction 1st???
I know the answer is 20 but can't remember procedure.
Do I change the decimal to a fraction 1st???
Answers
Answered by
Steve
getting rid of decimals and fractions is usually a good first step. In this case, we get
7y + 90 = 10y + 150
-3y = 60
y = -20
it could have been done without that. the procedure is to collect all the y's on one side, and the numbers on the other
.7y - y = 15 - 9
-.3y = 6
y = 6/-.3
y = -20
7y + 90 = 10y + 150
-3y = 60
y = -20
it could have been done without that. the procedure is to collect all the y's on one side, and the numbers on the other
.7y - y = 15 - 9
-.3y = 6
y = 6/-.3
y = -20
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