Question

which of the following values in the set below will make the equation 4x + 2 = 18 true? (Only input the number.)

{0, 1, 2, 3, 4}

Answer 1

Hey! So we need to solve the equation

we have

4x + 2 = 18

To solve it, we want to get 'x' all by itself but to do that, we first need to move 2 to the other side

since we're adding 2 to 4x, we need to do the opposite to move it to the other side

what is the opposite for addition?
is it subtraction? multiplication? division?

Answer 2

ok so pluck all 5 of those numbers and replace them with x and see which equation is equal to 18

Answer 3

multipcation

Answer 4

are you sure?

What is the opposite of addition?

think about how it is in pairs

we add and we subtract

we multiply or we divide

Answer 5

ohhhh i wasnt thinking subtcation

Answer 6

there you go!

so since we're adding 2

to move it to the other side, we need to subtract 2 on both sides

so we have

4x + 2 = 18

we subtract 2 on both sides of the equal sign

4x + 2 - 2 = 18 - 2

so what is 2 - 2 = ?

and what is 18 - 2 = ?

Answer 7

16 0

Answer 8

@AZ

Answer 9

Good, so now we have

4x + 2 - 2 = 18 - 2

4x = 16

we're multiplying 4 and x so to get rid of the 4, we have to do the opposite of multiplication to 4 so we can get 'x' all by itself

what is the opposite of multiplication

Answer 10

divison

Answer 11

so divide by 4 on both sides

what do you get?

4x / 4 will give us just x

but what is 16 / 4 =

Answer 12

4

Answer 13

so

4x = 16

4x/4 = 16/4

x = 4

and ta-da, you're all done!

Answer 14

thanks ll i need is to be walked through it

Answer 15

no problem!