Question

use substitution method x-y=1 2x+3y=17​

Answer 1

Step-by-step explanation:

x-y=1=>x=1+y

substitution on 2nd equation

2(y+1)+3y=17

2y+3y+2=17

5y+2=17

5y=15

y=3

substitution of y in 1st eq

x-3=1

x=4

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