Five times the difference of twice a number and three, decreased by the sum of the number and eight, equals 13

The number is 4.

Step-by-step explanation:

Let the number be = x

Five times the difference of twice a number and three can be written as

Decreased by the sum of the number and eight,

Hence complete expression becomes:

Now solving for x;

=>

=>

=>

So we get x = 4

The number is 4.

2

step-by-step explanation:

1+1=2

false

step-by-step explanation:

4y - 6 + 4y^2 - 9

before simplifying this contains 4 terms

after simplifying

4y -15 + 4y^2

it contains 3 terms