Asked by Anonymous

duwayne wrote a two-digit number. he multiplied it by 3, added 18, and divided by 8. his final answer was 9. what number did duwayne write?
Answered by Jen
Go backwards and do the opposite. (9x8)=x
x-18=y
y/3 = z
Answered by Reiny
2-digit no --- x
multiplied by 3 --- 3x
added 18 --- 3x+18
divided by 8 --- (3x+18)/8
got 9

(3x+18)/8 = 9
3x+18 = 72
3x = 54
x =18
Answered by mi
thank you. how did you get raid of the 8 on the left side?
Answered by dharmendra
3x+4y=18;kx_4y=180 solved?
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