Given matrices A, B, and C, perform the indicated operations. -1
A = 2
4
1 31
-20
-1 2
B=1-30
-2
[3 0 -1
C= 2 2 -2
LO 1 -1.
-1
38 -
[a b]
3B =C
с d
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21 i watched a 3 hr vid explaining it

step-by-step explanation:

du what else would it be

brainliest

alright well the answers to your question is

2xy/9 hope this have a nice day : )

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -

step-by-step explanation: