Question

1: a) 5+ 6x(– 3)–2

c) 3+8÷2–7x4

b) 2x3–(–9)+15

d) (–2)²–(–9)+4x3


2: a) 12÷[(9–7)x(5–8)]

c) (–4)x[2–(18÷3+9)]

b) 2x[7+(8–3x6)]

d) (19–13)÷[3x5–(2+7)]
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Answer 1

Respuesta:

1: a) 5+ 6x(– 3)–2

= 5- 18-2

= -15

c) 3+8÷2–7x4

=3+4-28

= -21

b) 2x3–(–9)+15

= 6+9+15

= 30

d) (–2)²–(–9)+4x3

= 4 +9+11

= 24

2: a) 12÷[(9–7)x(5–8)]

= 12÷[2x(-3)]

= 12÷ (-6)

= - 2

c) (–4)x[2–(18÷3+9)]

= - 4 × [2-15]

= - 4 × (-13)

= 52

b) 2x[7+(8–3x6)]

= 2×[ 7-10]

= 2× (-3)

= - 6

d) (19–13)÷[3x5–(2+7)]

= 6÷ [3×5-9]

= 6÷ 6

=1