Question

solve x+y=7 and 3x- 2y = 11 by substitution method​

Answer 1

Answer:

x=5, y=2

Step-by-step explanation:

x+y=7--eq1 ; 3x-2y=11--eq2

x+y=7--›x=7-y

Substitute x=7-y in eq2

3x-2y=11

3(7-y)-2y=11

21-3y-2y=11

21-5y=11

(-5y)=11-21

(-5y)=(-10)

5y=10

y=10/5

y=2

Substitute y=2 in eq1

x+y=7

x+2=7

x=7+2

x=5