Question

john paid $99 for one algebra book and two geometry book. the cost of a geometry book is $3 less than a algebra book. substitution equation

Answer 1

A=34, G=31

Explanation:

G=A-3

2G+A=99

plug in for g 2(A-3)+A=99

distribute 2 A-3+A=99

combine like terms 3A-3=99

solve for a 3A=102 A=34

plug in a solve for g G=34-3 G=31