Answer:
They bought 5
Step-by-step explanation:
65x+40y=765
65(5)+40(11)=765
The coefficient would be c I believe I may be wrong
X=2
2x-3=-x+3
add three to both sides
add 1x to each side
should be left with 3x=6
divide both sides by 3 to get x alone
your answer then is x=2