Question

(-7) × 4
(-9) × (-7)
(-1,2) × (-3,1)
(-1,2) × (3,1)

Answer 1

$( - 7) \times 4 = \\ - (7 \times 4) \\ - 28$

$( - 9) \times ( - 7) = \\ 9 \times 7 \\ 63$

$( - 1.2) \times ( - 3.1) = \\ 1.2 \times 3.1\\3.72$

$( - 1.2) \times (3.1) = \\ - (1.2 \times 3.1) \\ - 3.72$