Simultaneous Equations: Solving for Unknown Variables | Urgent Homework Help

[Ali42]

Homework Statement

Googd morning!
There is the exercise:
Solve the following simultaneous equation:

Homework Equations

a) x²+ 2xy=8, 3x-5y=1
b) (x+1)(x+2)=y, 2y-x=7

The Attempt at a Solution

Well, i don't really know how to start.
If someone can help me to know how to do for the first one i will try to do the second one.
Thank you!

It's URGENT! Please!

 

[danago]

Try rearranging the second equation and substituting into the first equation, so that you have one equation with only one variable.