Mat 116
posted by Robin .
substitution method
7x +9y= 19
x=255y
___________
7(255y)+9=19
17535 +9=19
175 175
_______________
26y= 156
y=6
substitute for x
x=255y
x=255(6)
x=2530
x=5
now substitute
7x+9y=19
7(5)+ 9(6)=19
30+56=19
19=19 his part is wrong I believe explain if I need to do this differently?

The last lines...
7(5)+9(6)=19
35+54=19
19=19
You made two math errors on yours 
Anwers to math week 6 uop
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