He has a total of 40
$40-$5-$15=$20
he has a total of $20 left
mark brainliest
You have to distribute the 4 to the numbers in the parenthesese. So 4 times 3x which is 12x and 4 times 5 which is 20 so now you get 12x plus 20 equals 8. Now you have to subtract 20 from 8 which is -12 so now you have 12x=-12 now divide the 12 from x and 12 from -12 and so now you have x=-1
6.5 = - 1/2(5) + 9
6.5 = - 2.5 + 9 which is the same as 6.5 = 9 - 2.5
6.5 = 6.5
So yes, this ordered pair IS a solution.
-1 = (x-1)/3
(multiply both sides by 3)
-3 = x-1
(add 1 on both sides)
x=-2
