Question

y = 4x - 7
16x - 5y = 25
solve using elimination by substitution​

Answer 1

Answer:

4x−y=7 ...(1)

16x−5y=25 ...(2)

Multiplying (1) by 4, we get

16x−4y=28 ...(3)

16x−5y=25 ...(2)

Subtracting (3) and (2),

y=3

Substituting y=3 in (1), we get x as

4x−3=7

4x=10

x=

4

10

or x=

2

5

x=

2

5

,y=3