Question

please solve it fast please​

Answer 1

Answer:

The answer will be option number (a) 8

Step-by-step explanation:

The answer will be option number (a) 8

Answer 2

★Question -

What should be added to -3a+7b-16 to get sum -8

★Solution-

Assume the unknown quantity be x.

-3a+7b-16+x = -8

x = (-8)-(-3a+7b-16)

= -8+3a-7b+16

= 3a-7b+8

3a-7b+8 should be added to get sum -8.

» Verification

(-3a+7b-16)+(3a-7b+8)

= -3a+7b-16+3a-7b+8

3a and 7b get cancelled

= -16+8

= -8

Hence , verified.

★Additional Information -

Subtraction of Algebraic expressions

Example -

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

3a+b-3c-c-2a+3b

= (3a-2a)+(3c-c)+(b+3b)

= a+2c+4b

*Note - Don't forget to convert the signs.