Question

Calculati. dau coronita

c)-1 x [-8 x (-3+2x4) +6] - 11
d)-2x[-5-1x(-3+2 x 1)]-7x (-1)

Answer 1

Răspuns:

c) 23

d) 15

Explicație pas cu pas:

c) -1×[-8×(-3+2×4) +6] - 11 =

= -1×[-8×(-3+8) +6] - 11

= -1×(-8×5 +6) - 11

= -1×(-40 +6) - 11

= -1×(-34) - 11

= 34 - 11

= 23

d) -2×[- 5 - 1×(-3 + 2×1)] - 7×(-1) =

= -2×[- 5 - 1×(-3 + 2)] + 7

= -2×[- 5 - 1×(-1)] + 7

= -2×[- 5 + 1] + 7

= -2×(- 4) + 7

= 8 + 7

= 15