Question

Solve the two-step equation. -9x + 0.4 = 4
Which operation must be performed to move all the constants to the right side of the equation?
Then, which operation must be performed to isolate the variable?
The solution to the equation is x = _____.

Answer 1

how you eliminate on the left side the +0,4 ? what you need adding to 0,4 to get zero ?

Answer 2

wait, what?

Answer 3

add to both sides -0,4 what will get so ?

Answer 4

or how you like subtract from both sides 0,4

Answer 5

you want me to add 0.4 to -9x and 4?

Answer 6

to add minus 0,4 to the both sides

Answer 7

oh ok

Answer 8

-9x + -0.4 = -9.4x
4 + -0.4 = 3.6

Answer 9

\(-9x + 0.4 = 4 \)
What I would do is change the plus `(+)` in `+0.4` to a minus
so it's `-0.4` so now that it's a minus subtract from both sides
which should give you \(−9x=3.6\)
because
\(−9x+0.4−0.4=4−0.4\)
\(4-0.4=3.6\)
Therefore, you have \(−9x=3.6\)
Then subtract `-9` from both sides
\(\LARGE\frac{-9x}{-9}=\frac{3.6}{-9}\)
\(\cancel{\frac{-9x}{-9}}=\frac{3.6}{-9}\) (-9x/-9 cancels)
So all you would have left is \(\frac{3.6}{-9}\)
once that is simplified then you should have your answer
\(\frac{3.6}{-9}=?\)
x=?

If that makes any sense 👀

Answer 10

\(\color{#0cbb34}{\text{Originally Posted by}}\) @supie
\(-9x + 0.4 = 4 \)
What I would do is change the plus `(+)` in `+0.4` to a minus
so it's `-0.4` so now that it's a minus subtract from both sides
which should give you \(−9x=3.6\)
because
\(−9x+0.4−0.4=4−0.4\)
\(4-0.4=3.6\)
Therefore, you have \(−9x=3.6\)
Then subtract `-9` from both sides
\(\LARGE\frac{-9x}{-9}=\frac{3.6}{-9}\)
\(\cancel{\frac{-9x}{-9}}=\frac{3.6}{-9}\) (-9x/-9 cancels)
So all you would have left is \(\frac{3.6}{-9}\)
once that is simplified then you should have your answer
\(\frac{3.6}{-9}=?\)
x=?

If that makes any sense 👀
\(\color{#0cbb34}{\text{End of Quote}}\)
good job @supie like a math teacher

Answer 11

Thanx

Answer 12

so x would = 3.6/-9 because if -9x/-9 cancels then all we would have is x. i hope you get what i mean.

Answer 13

wait i think i got it wrong hold up.

Answer 14

You have to find what x equals-

Answer 15

Simplify \(\frac{3.6}{-9}\) to get what x equals.

Answer 16

\(\color{#0cbb34}{\text{Originally Posted by}}\) @supie
Simplify \(\frac{3.6}{-9}\) to get what x equals.
\(\color{#0cbb34}{\text{End of Quote}}\)
Or \(3.6 \div -9\)

Answer 17

3.6/-9 = -0.4 right?

Answer 18

\(\color{#0cbb34}{\text{Originally Posted by}}\) @mgardner
3.6/-9 = -0.4 right?
\(\color{#0cbb34}{\text{End of Quote}}\)
Yes

Answer 19

so x = -0.4!

Answer 20

Yes, correct!

Answer 21

ok, thanks a lot!

Answer 22

np