B) �
31 + 2 + 3 + 4 = 0
51 − 2 + 3 + 4 = 0.

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.

the answer is 3/2 and for decimal: 1.5

hope i

-lavira: )