1X+8X=90
9X=90
X=10
so one of them is 10 and the other one is 8 times 10 which become 80
Answer:
its 10 + 4x and 10 + x+x+x+x
This is set up as a proportion, so let’s cross multiply the values. When you do, you should get 21 = 6x. Now, divide each side by 6 to isolate the “x”. 21/6 is 3.5. x = 3.5. The unknown value is 3.5.
In the numerator, we can pull a 7 out of the expression 7x + 14 to get the product 7(x + 2). In the denominator, we can factor the expression 2x² + x - 6 like this:

Our fraction can now be written as

the only factor the numerator and denominator share in this case is x + 2.
Answer: $49.78
Step-by-step explanation: $15.75 + $28.79 + $5.24 = $49.78