Question

2x – by = -10
3x -- 7y = -13

BY SUBSTITUTION
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Answer 1

Step-by-step explanation:

let 2x-by=-10...1

and 3x-7y=-13...2

from 1,x=7y/3...3

put in 2 .

So,3(7y/3)-7y=-13

7y-7y=-13

It has infinite number of solutions