Question

how do you solve x - 30% = 22.40?? I know the answer is 32.00 but how did i arrive here???

Answer 1

i think you mean x - 30%x = 22.40

Answer 2

first thing you need to do is change 30% into a decimal \[\implies x - 0.30x = 22.40\]
got it?

Answer 3

yes, and...

Answer 4

then remember your algebra... x - 0.30 x is like (1 - 0.30)x

1 - 0.30 is 0.70 so x - 0.30x = 0.70x
\[\implies 0.70x = 22.40\]
still following?

Answer 5

yes, ty

Answer 6

then the final step would be to divide both sides by 0.70
\[\implies x = \frac{22.40}{0.70}\]
this gives you 32.00 like you said

Answer 7

thank you. G

Answer 8

welcome