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OpenStudy (anonymous):
Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 15x + 9y = 240, 6x + 3y = 90
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OpenStudy (anonymous):
do you have to just move the 15x to the other and vise versa?
OpenStudy (anonymous):
yes, the whole thing is that you want to get one of the equations in either the y= or x= form. Then you can subsitute that in to the other equation
OpenStudy (anonymous):
okay so 15x+9y=240 first you take 15x and subtract it from 240 to get 225 then you subtract 9y from 225 to get 216
OpenStudy (anonymous):
okay I did something wrong
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