Asked by josh
solve using the substitution method:
8x+5y=-12
x=12-4y
8x+5y=-12
x=12-4y
Answers
Answered by
Bosnian
x=12-4y
8x+5y= -12
8*(12-4y)+5y= -12
8*12-8*4y+5y= -12
96-32y+5y= -12
96-27y= -12
96+12=27y
108=27y Divide with 27
4=y
y=4
x=12-4y
x=12-4*4
x=12-16
x= -4
8x+5y= -12
8*(12-4y)+5y= -12
8*12-8*4y+5y= -12
96-32y+5y= -12
96-27y= -12
96+12=27y
108=27y Divide with 27
4=y
y=4
x=12-4y
x=12-4*4
x=12-16
x= -4
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