Question

plz answer fast...... # 20 points

Benny thinks of a number, subtracts 18 from it and divides the difference by 3.The result is -4.What is the number.

Answer 1

let num be x
ATQ
x-18/3=4
cross multiply
x-18 =-4*3
x-18=-12
x=-12+18
x=6
num he thought was 6

Answer 2

Hey mate!

Let the number be x.

Now, according to question..



$\frac{(x - 18)}{3} = \frac{ (- 4)}{1} \\ \\ x - 18 = - 4 \times 3 \\ \\ x - 18 = - 12 \\ x = - 12 + 18 \\ x = 6$


Now, let's check the result, substitute the value of x = 6 in the above equation..


$\frac{x - 18}{3} = - 4 \\ \\ \frac{6 -18 }{3} = - 4 \\ \\ \frac{ - 12}{3} = - 4 \\ \\ - 4 = - 4$


Yeah..we got it..so the number is 6.

HOPE IT HELPS!

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