Can someone help me with this. Will Mark brainliest. Need answer and explanation/work. Thank you.

Solve the system of equations y= 3/2 - 1, -x+ y =-3

You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up

Find the missing variable for a parallelogram: a = latex: 28in^2 28 i n 2 h = b = 6.3 in (1in=2.54cm)