Question

slove the Algebraic expressions ​

Answer 1

Step-by-step explanation:

$1)3mn + ( - 5mn) + 8mn + ( - 4mn)$

$3mn - 5mn + 8mn - 4mn$

$2mn$

$2)3 - 8tz + (3tz - z) + (z - t)$

$t - t - 8tz + 3tz + z - z$

$- 5tz$

$3) - 7mn + 5 + 12mn + 2 + 9mn - 8 - 2mn - 3$

$12mn - 4$