Question

Take 4a - 3b + 2c from 2a - 3b + 4c.
a)-2a + 2c
b)-2a - 2c
c)2a + 2c
d)2a - 2c

Answer 1

I don't think any of your answers are correct....

Answer 2

Just to clarify, do you mean (21-3b+4c) - (4a-3b+2c)?

Answer 3

* in the first parentheses, I meant to write 2a

Answer 4

You add/subtract like terms, or the terms that are similar. I think you worded this problem sort of strangely because doing: (2a - 3b + 4c) - (4a - 3b + 2c) = -2a + 6, which isn't a solution given.

Doing (4a - eb + 2c) - (2a - 3b + 4c) = 2a-2c.

You set the two equations up on top of each other and subtract each term separately.

4a - 3b + 2c Step 1: 4a - 2b = 2a.
2a - 3b + 4c Step 2: -3b - (-3b) = -3b + 3b = 0
---------------- Step 3: 2c-4c = -2c
2a + 0 - 2c
2a-2c

Does that make sense?