can someone me with a step by step of this problem ? i'll seriously appreciate it, and you so so so much in
don't answer if you're ! i need actual , don't just take my points. : c

7x+8y=-18, 4x-9y=-3 solve the system of equations

How many $20 bills do you need to have to make $280

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42