how do you solve (3x+9)-(5x-0)
side note: dont want just the answer but also how'd you solved the answer...
+3454 Start by lining it up vertically.
3X + 9
- 5X - 0 (then just subtract like you usuallly would)
------------
-2X+9
So your answer is (-2X+9)
You can check this by putting in a number for x, for the simplified version and the original problem to see if it works. Let's put the number 5 in.
Original problem:
(3(5)+9)-(5(5)-0) =
(15 + 9)-(25- 0) =
(24)-(25)
= -1
Simplified version:
(-2(5)+9) =
((-10) + 9)
= -1
They both equal -1, so it works!
+3454 Start by lining it up vertically.
3X + 9
- 5X - 0 (then just subtract like you usuallly would)
------------
-2X+9
So your answer is (-2X+9)
You can check this by putting in a number for x, for the simplified version and the original problem to see if it works. Let's put the number 5 in.
Original problem:
(3(5)+9)-(5(5)-0) =
(15 + 9)-(25- 0) =
(24)-(25)
= -1
Simplified version:
(-2(5)+9) =
((-10) + 9)
= -1
They both equal -1, so it works!
