Suri has 1 7/10 boxes of matchsticks. she give 1/4 of a box to philip.

how many boxes of matchsticks does suri have left? give your answer as a mixed number .

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.