Tentukan hasil dari
a. 5 × ( 15 − 6)
b. 12 × ( −7) + (−16) ÷ (−2)
c. − 15 ÷ (−3) − 7 × (−4)
d. [1 + 2 ÷ 3 × 4] × [9 x 7 (7 – 8) ÷ (6 + 5)]
a. 5 × ( 15 − 6)
b. 12 × ( −7) + (−16) ÷ (−2)
c. − 15 ÷ (−3) − 7 × (−4)
d. [1 + 2 ÷ 3 × 4] × [9 x 7 (7 – 8) ÷ (6 + 5)]
a. 5 × ( 15 − 6)
= 5 x 9
= 45
b. 12 × ( −7) + (−16) ÷ (−2)
= -84 + 8
= -76
c. − 15 ÷ (−3) − 7 × (−4)
= 5 - (-28)
= 5 + 28
= 33
d. [1 + 2 ÷ 3 × 4] × [9 x 7 (7 – 8) ÷ (6 + 5)]
= [1 + 0,667 x 4] x [9 x 7 (-1) ÷ 11]
= [1 + 2,668] x [9 x 7 x (-1) ÷ 11]
= [3,668] x [63 x (-1) ÷ 11]
= [3,668] x [-63 ÷ 11]
= [3,668] x [-5,727]
= -21