Question

For 21-22, simplify the algebraic expressions.

21. -3(6y) 22. -7a(3b)

Answer 1

21.

-3(6y)

multiplying we get

-18y

22.

-7a(3b)

on multiplying we get

-21ab

Answer 2

(21)

$-3(6y)$

we can multiply it

$=-3*6*y$

$=-18*y$

$=-18y$............Answer

(22)

$-7a(3b)$

we can multiply it

=$-7a*3b$

=$-7*a*3*b$

we can rearrange it

=$-7*3*a*b$

=$-21*a*b$

=$-21ab$...............Answer