Question

Solve for j.

-9j = -8j + 8

Answer 1

Simplifying
-9j = -8j + 8

Reorder the terms:
-9j = 8 + -8j

Solving
-9j = 8 + -8j

Solving for variable 'j'.

Move all terms containing j to the left, all other terms to the right.

Add '8j' to each side of the equation.
-9j + 8j = 8 + -8j + 8j

Combine like terms: -9j + 8j = -1j
-1j = 8 + -8j + 8j

Combine like terms: -8j + 8j = 0
-1j = 8 + 0
-1j = 8

Divide each side by '-1'.
j = -8

Simplifying
j = -8
So how do we know this is true?

Answer 2

Put the answer back into the equation?

Answer 3

Right! So do that. Replace j with -8

Answer 4

lol
HI!!

Answer 5

where in the world did that come from?

Answer 6

-9 x -8 = -8 x -8 + 8
-9 x -8 = 72
-8 x -8 + 8 = 72
72 = 72 So our equation is true.

Answer 7

Hi.

Answer 8

Hey.

Answer 9

\[-9j=-8x+8\] add \(8j\) get \[-j=8\] change the sign get \[j=-8\] that is all

Answer 10

Great job, @ArianatorNo1

Answer 11

Thanks all!