Try another version of this question Get help: Box 1: Enter each element of the matrix as number (like 5, -3, 2.2)
D = `[(-9,4,-8,-2,-1),(0,-9,3,8,-2),(-5,-1,-3,-8,9),(1,-5,8,9,7),(5,0,6,-6,-7)]` C = `[(-4,9,-8,-1,-2),(-5,0,1,5,8),(9,-1,-8,-9,6),(4,2,1,-7,-7),(2,0,-6,3,-5)]`
`3D+2C = `
`[(-35,30,-40,-8,-7),(-10,-27,11,34,10),(3,-5,-25,-42,39),(11,-11,26,13,7),(19,0,6,-12,-31)]`