Question

Anyone can u plz solve this​

Answer 1

Answer:

See below.

Step-by-step explanation:

First Let's us find the sum.

$\sf\longmapsto \: 3x²y - 5a + 4b + (-9x²y - 7b + 4a)$

$\sf\longmapsto3x²y - 9x²y - 5a + 4a + 4b - 7b$

$\sf\longmapsto \: -6x²y - a - 3b$

Now, let's us find the difference (minus)

$\sf\longmapsto \: 3x²y - 5a + 4b - (-9x²y - 7b + 4a)$

$\sf\longmapsto3x²y + 9x²y - 5a - 4a + 4b + 7b$

$\sf\longmapsto \: 12x²y - 9a + 11b$

Now minus the sum from the difference.

$\sf\longmapsto \: 12x²y - 9a + 11b - (-6x²y - a - 3b)$

$\sf\longmapsto \: 12x²y + 6x²y - 9a + a +11b + 3b$

$\sf\longmapsto \: 18x²y - 8a + 14b$

Therefore,$\sf\longmapsto \: 18x²y - 8a + 14b$ is the answer.

Answer 2

Answer:

• 18x²y - 8a + 14b

Step-by-step explanation:

The Sum:

• 3x²y - 5a + 4b +  (-9x²y - 7b + 4a) =
• 3x²y - 9x²y - 5a + 4a + 4b - 7b =
• -6x²y - a - 3b

The difference:

• 3x²y - 5a + 4b - (-9x²y - 7b + 4a) =
• 3x²y + 9x²y - 5a - 4a + 4b + 7b =
• 12x²y - 9a + 11b

Subtract the sum from the difference:

• 12x²y - 9a + 11b - (-6x²y - a - 3b) =
• 12x²y + 6x²y - 9a + a + 11b + 3b =
• 18x²y - 8a + 14b