Question

the rainfall this year was 18.6 centimeter. this is 3.2 centimeters less than half of the rainfall last year. what was the the rainfall last year?

Answer 1

Try setting this one up.

Answer 2

18.6 - 3.2 1/2 ?

Answer 3

\[18.6 = (1/2 * r) - 3.2\]
18.6 cm is 3.2 cm less than half of the rainfall last year.

Answer 4

10.9 ??

Answer 5

Add 3.2 to both sides, then multiply by 2. This will yield the value of 'r'.

Answer 6

ohhh ! i divide by 2 /; but tyy !