Question

9(u-2) + 1.5u=8.25
u is the number of hours walking up a hill and (u-2) is the number of hours sledding down the hill

Answer 1

Answer:

u= 2.5

Step-by-step explanation:

Using BIDMAS

Step 1: Expand the bracket

9(u-2) + 1.5u=8.25

9u-18+1.5u=8.25

Step 2: collect like terms

9u+1.5u=8.25+18

10.5u=26.25

Step 3: Divide both sides by 10.5 to get u

u= $\frac{26.25}{10.5}$= 2.5

Answer 2

u=2.5 because i had this question before ..