Question

4. Find
(a) (-7) – 8 - (-25)
(b) (-13) + 32-8-1
(c) (- 7) + (-8) + (-90)
(d) 50 - (-40) - (-2)
explain these with steps​

Answer 1

Answer:

$(a) \: ( - 7) - 8 - ( - 25) \\ \: = \: \: - 7 - 8 + 25 \\ = - 15 + 25 \\ =1 0$

$(b) \: ( - 13) + 32 - 8 - 1 \\ \: \: = \: - 13 + 32 - 8 - 1 \\ \: \: = - 22 + 32 \\ \: \: = 10$

$(c) \: (-7 ) +( - 8) + ( - 90) \\ \: \: \: = - 7 - 8 - 90 \\ \: \: \: = - 105$

$(d) \: 50 - ( - 40) - (- 2) \\ \: \: = 50 + 40 + 2 \\ \: \: = 92$