Try another version of this question Get help: Box 1: Enter each element of the matrix as number (like 5, -3, 2.2)
C = `[(-4,9,-10,-1,1),(6,8,-2,2,-9),(-7,-6,4,-3,-5)]` E = `[(3,-3,7,1,-8),(-2,9,2,-4,8),(-1,4,6,-6,5)]`
`3C+4E = `
`[(0,15,-2,1,-29),(10,60,2,-10,5),(-25,-2,36,-33,5)]`