Question

elimination method
equation 1 = x+y=7
equation 2 = 2x-3y=9

Answer 1

Answer:

Answer

Given equations are 

x+y=7 ....(1)

and 2x−3y=9 ....(2)

Multiply equation (1) by 3, we get

3x+3y=21 .... (3)

Add equations (2) and (3) to eliminate y, 

5x=30

⇒x=6

Substitute this value in equation (1), we get

6+y=7

⇒y=1

Therefore, the solution is x=6,y=1.