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C = `[(-6,4),(0,5),(-9,1),(7,6)]` D = `[(-10,6),(8,-4),(-8,-7),(0,3)]`
`4C+3D = `
`4C+3D = `
Get help:
Box 1: Enter each element of the matrix as number (like 5, -3, 2.2)
`[(-54,34),(24,8),(-60,-17),(28,33)]`