Question

Solve x + 2y = -1 and 2x – 3y =12 by elimination ,substitution and cross multiplication method.

Answer 1

Answer:

x+2y=-1 let be equation 1

2x-3y=12 let be equation 2

Step-by-step explanation:

equation 1 multiple by 2 gives

2x-6y=24

next eliminitation

methood

2x-6y=24

2x-3y=12

x in equation 1and2 will cancel

-3y=12

y=-4