100 POINTS (zoom in if you need too) I NEED AN ANSWER NOW ASAP PLS

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.

Solve the equation.then check your solution 8=1.88+a

Can anyone me get through my algebra 2 class? the only class i need to graduate..