Question 75920
If the product of a number and -3 is reduced by 5, the result is 25 less than twice the opposite number. Find the number
:
Let the number be x, the opposite number will = -x
;
-3x - 5 = -2x - 25
:
Get rid of all those negatives, mult by -1:
3x + 5 = 2x + 25
3x - 2x = 25 - 5
x = 20 is the number
:
Try it in the original equation:
-3(20) - 5 = 2(-20) - 25
-60 - 5 = -40 - 25