If `A=[[4,-1],[5,-3]]` and `B=[[7,4],[8,-5]]` then find the value of `A+B` and `A-B`

If A=[[2,5],[3,7]] and B=[[1,3],[4,8]] ,then find AB.

If A+B=[[2,4],[3,5]] and A-B=[[8,6],[7,1]] . Then find A and B.

If =[[1,4,-1],[2,6,5]] and B=[[3,-2,-6],[2,0,-7]] , find A+B and A-B

If A=[[1,3,5],[-2,5,7]] and 2A-3B=[[4,5,-9],[1,2,3]], find B

If A={1,2,3,4,5} and B={1,3,5,7,9} then find the value of (A-B)uu(B-A)

If A=[[3,9,0],[1,8,-2]] and B=[[4,0,2],[7,1,4]] ,find A+B and A-B .

If a/b=3/4 then find the value of 7a-4b:3a+b .

If A+B^T=[(1,3),(4,5)] and A^T-B=[(7,8),(-1,3)] , then find matrices A and B.

If U = {1, 2, 3, 4, 5, 6, 7, 8, 9}, B = { 2, 4, 6, 8} and C = {3, 4, 5, 6} then find the value of B nn C' .

If (a)/(b) = (4)/(5) , then find the value of (4a+5b)/(5b) .