Answer:
6. 5x - 2
7. 13in
8. 3a + 20
9. 21 1/2
explanation:
6. add all of the values together
7. plug in 3 into the answer from #6 5(3) - 2 and you will get 13
8. add all values
9. plug in 1/2 into the answer from #8 3(1/2) + 20 and you will get 21 1/2
(x+2/5)7=63/10
then divide both sides by 7
x+2/5=63/70
subtract 2/5 from both sides
and x= 1/2
*x=original number
Sam's solution is incorrect. the correct answer is x=3
14=2x +6
14-6=2x+<u>6-6</u>
8=2x
x=<u>2</u>
<u> </u><u> </u><u> </u><u> </u>8
x=4
