Question

Subtract:
a + b - 3 from 2a - 3b + 5​

Answer 1

Answer:

Correct option is

D

2a+3b+4c

It is instructed to subtract (2a−3b+4c) from the sum of (a+3b−4c),(4a−b+9c) and (−2b+3c−a).

So, First we will do the sum of the three given polynomials,

Sum =(a+3b−4c)+(4a−b+9c)+(−2b+3c−a)

=(a+4a−a)+(3b−b−2b)+(−4c+9c+3c)

=4a+8c

Now, we can perform the subtraction,

∴ Required difference

=(4a+8c)−(2a−3b+4c)

=4a+8c−2a+3b−4c

=2a+3b+4c

Step-by-step explanation:

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Answer 2

Answer:

• Answer is a-2b+8.

Step-by-step explanation:

Here it is given that,

2a-3b+5-(a+b-3)

Now we will firstly solve bracket then subtract terms.

2a-3b+5-a-b+3

Now we will subtract the terms

a-2b+8