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

u= 2.5

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=
`(26.25)/(10.5)`= 2.5