Question

como puedo resolver estas operaciones completas
a) 8 + (4 – 9 + 7) · 2 + 4 · (3 – 8 + 4) =
8+ 2 .2 + 4 . 9 =
18 . 2 + 36 =
36 + 36 = 72

b) 4 · [(+5) + (–7)] – (–3) · [7 – (+3)] =

c) (–3) · (+11) – [(–6) + (–8) – (–2)] · (+2) =

d) (–6) · [(–7) + (+3) – (7 + 6 – 14)] – (+7) · (+3) =

Answer 1

A.
8+(-5+7)x2+4x(-5+4)
8+2x2+4x(-1)
8+4-4
12-4
8

B.
4x(5-7)+3x(7-3)
4x(-2)+3x4
-8+12
4

C.
(-3)x11-(-6-8+2)x2
-3x11-(-14+2)x2
-3x11-(-12)x2
-33-(-24)
-33+24
-9

D.
-6x(-7+3-(13-14))-7x3
-6x(-7+3-(-1))-7x3
-6x(-7+3+1)-7x3
-6x(-4+1)-7x3
-6x(-3)-7x3
18-21
3