Question

What is the value of y when x = 6? -3x + 9y = 18

Answer 1

Answer:

y=4

Step-by-step explanation:

We are given the expression:

$-3x+9y=18$

We want to find $y$ when $x$ equals 6. Therefore, we can plug 6 in for x.

$-3(6)+9y=18$

Now, let's begin solving for y. First, multiply -3 and 6.

$-18+9y=18$

Next, add 18 to both sides of the equation. We add because 18 is negative and addition will cancel out the -18 on the left.

$-18+18+9y=18+18$

$9y=18+18$

$9y=36$

Finally, divide both sides by 9. We divide because y is being multiplied by 9, and division is the inverse of multiplication.

$9y/9=36/9$

$y=36/9$

$y=4$

When x=6 in the equation, y is equal to 4.

Answer 2

Hey there! I'm happy to help!

Let's plug in our x value.

-3(6)+9y=18

-18+9y=18

We add 18 to both sides.

9y=36

We divide both sides by 9.

y=4

Have a wonderful day! :D