Question

Slove by subsitution Method
x-3y-7:0,3x-3y-15-0​

Answer 1

Answer:

x-3y-7=0 -(i). , 3x-3y-15=0-(ii)

x=3y+7

put x=3y+7 in eq.(ii)

3(3y+5)-3y-15=0

9y+21-3y-15=0

9y-3y+21-15=0

6y+6=0

y=-6/6

y=-1

put y=-1in eq(I)

x-3(-1)-7=0

x+3-7=0

x-4=0

x=4

x=4,y=-1