Question

Solve the following system of equations by cross multiplication method
2x + y = 7 , 4x - 3y = -1

Answer 1

Answer:

x=2. y=3

Step-by-step explanation:

2x+y=7 multiply by 4

4x-3y=-1 multiply by 2

we get

8x+4y=28------------3

8x-6y=-2--------------4

substraction eq 3 and eq 4

8x+4y=28

8x-6y=-2

- +. +

--------------

10y=30

y=30÷10

y= 3

put y=3 in eq 3

8x+4×3=28

8x+12= 28

8x=28-12

8x=16

x=16÷8

x=2

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