Question

find the sum of algebraic expressions -7mn+5,12mn+2,8mn-8,-2mn-3​

Answer 1

Answer:

the answer is 11mn-4

Step-by-step explanation:

because by adding the sum of 512 + 28 - 8 - 72 - 8 - 2 - 3 it is the right answer to be solve

Answer 2

Answer:

11mn - 4

Basic info. about the concept:

Constants -

any numeric expression like 1 + 5 + 9, are constants/constant (4).

Variable -

any alphabetic/algebraic expression like x + Y are variables.

Expression -

a group of variables and constants is called expression.

Equation -

when the sign '=' (equal) is added to an expression, it turns to be a equation.

Step-by-step explanation:

(-7mn) + 5 + (12mn) + 2 + 8mn + (-8) + (-2mn) + (-3)

          {First, we'll separate all the like algebraic terms and constants.}

⇒ (-7mn) + (12mn) + 8mn + (-2mn) + 5 + 2 + (-8) + (-3)

⇒ -7mn - 2mn +12mn +8mn +7 -11

⇒ -9 + 20mn -4

⇒ 11mn - 4