Rewrite 1/2-3 using positive exponents only and evaluate the result

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy

14

step-by-step explanation: