Question 1101744
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Y=-2x+4
Y-3x=-11
How do you substitue this? 
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How to substitute is obvious.




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I also have a problem that I cant figure out but if you cant help thats fine.
"The product of two numbers is 60. One number exceeds another by 7. 
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{{{system(xy=60,y-x=7)}}}


{{{y=x+7}}}
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{{{x(x+7)=60}}}
but instead of trying to solve as quadratic equation, you might also try to factorize 60 and look for any combination whose difference is 7.
Any?
{{{system(2*30,3*20,4*15,5*12)}}}----------Maybe the last one?



{{{system(x=5,and,x+7=12)}}}


The two numbers are 5 and 12.