What is the value of x when -3x + 7x = -12?

a) -3
b) -6/5
c) 3
d 4/7

A) -3

Step-by-step explanation:

-3x+7x=-12(add -3 and +7 which gives +4 or just 4)

so 4x=-12(divide 4 on both sides of equation)

that gives x=-3 as 4/4 is one and 12/4 =3 and because there is minus sign in front of 12 so it is -3

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.

$75.00

step-by-step explanation:

i = prt

i = 1,5000 * 0.025 * 2

i = 75