78=9x-3 solve.?

Question

solve... I have no clue been stick on this for now 2 hours

Answer 1

You need to isolate the x on one side of the equation. Since it's already on the right side, get rid of everything else on that side. First, get the three to the other side of the equation by adding 3 to both sides (remember, whatever you do to one side of the equation, you can and MUST do to the other)

78 = 9x - 3
78+3 = 9x-3+3
81 = 9x

Next, to get rid of the 9 multiplied by the x, divide both sides by 9.

81/9 = 9x/9
9 = x

Thus, we get x=9.

Answer 2

Well to solve simple one variable equations such as this, you want to get all the variables on one side of the equation.
Since the only variable is 9x, you want to get that alone, so you can add 3 to each side of the equation (Because each side is equal to the other, adding three to both makes them stay equal, and essentially moves the three over)
Then you have 9x=81
From here, you need to get rid of the coefficient of the variable (the 9 before the x)
To do this we divide both sides by 9, and our answer turns out to be 9.

Answer 3

This really isn't very hard. Steps to follow:
Start out with: 78=9x-3
Add 3 to both sides: +3 +3
And get: 81=9x
Divide both sides by 9: 81/9 =9x/9
And you find that: 9=x
Good luck!!

Answer 4

Add 3 to both sides
78+3=9x-3+3
81=9x
x=9

Answer 5

78 + 3 = 9x
81 = 9x
81/9 = 9x/9
9 = x
x = 9

Answer 6

x=9
78+3=9x
81divided by 9 =9

Answer 7

78=9x-3
78+3=9x
81=9x
81/9=9x/9
9=x
x=9

Answer 8

Add 3 to both sides to get:
81=9x
Divide both sides by 9 to get:
9=x

And that's the answer!

Answer 9

78=9x-3
9x=78+3
9x=81
x=81/9
x=9