A/2-b/3=1 solve for a, add b/3 to both sides
a/2=1+b/3 which is equal to
a/2=(3+b)/3 multiply both sides by 2
a=(6+2b)/3 now you can substitute this into 2a+3b giving you:
2(6+2b)/3 + 3b which is equal to
(12+4b+9b)/3
(13b+12)/3
Answer:
95.69
Step-by-step explanation:
two sweaters costs 27.34 then one would cost 13.67
7×13.67 = 95.67
Answer should be: X = 4, -5
