Question

solving simultaneous equations using elimination method 7x +3y=25 ,_2x +y=4

Answer 1

Answer:

Step-by-step explanation:

7x+3y=25...(1)

2x+y=4...(2)

Multiply the eq^n (2) by 3

6x+3y=12...(3)

Subtract eq^n (3) from (1)

7x+3y=25

6x+3y=12

(-) (-) (-)

X=13

Substitute x=13 in eq^n (1)

7(13)+3y=25

91+3y=25

3y=25-91

3y=-66

Y=-22