Question

if a certain number is decreased by 21 is 81

Answer 1

Answer:

102

Step-by-step explanation:

a number decreased by 21 is 81

so let x represent the number and write the equation...

x-21=81

to solve this, work backwards.

81+21=x

81+21=102

so x=102 or the "certain number" is 102

hope this helps!

please can you please mark me brainliest pleassse? :)