Question

$7x + 3y = 15 \\ 12y - 5x = 39$
solve simultaneous equation by elimination method.​

Answer 1

Answer:

Step-by-step explanation:

Just make 3y equal to 12 so that we can substitute.

So multiply by 4 at both sides

28y+12y=60.

Then subtract 12y-5x from this.

28x+12y-12y+5x=21

33x=21

X=21÷33=7/11