Question

Calculeaza respectand regulile invatate.a)8×5×[20+3×(2+4×6)-15]-3=
Va rog repede
b)[150+12×8-(14×2-40÷4)]×10=
Dau coroana primului care raspunde va rogg

Answer 1

Răspuns:

Explicație pas cu pas:

a)

8 × 5 × [ 20 + 3 × ( 2 + 4 × 6 ) - 15 ] - 3 = 3 357

= 40 × [ 20 + 3 × ( 2 + 24 ) - 15 ] - 3 =

= 40 × ( 20 + 3 × 26 - 15 ) - 3 =

= 40 × ( 20 + 78 - 15 ) - 3 =

= 40 × ( 98 - 15 ) - 3 =

= 40 × 84 - 3 =

= 3 360 - 3 =

= 3 357

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b)

[ 150 + 12 × 8 - ( 14 × 2 - 40 : 4 ) ] × 10 = 2 280

= [ 150 + 96 - ( 28 - 10 ) ] × 10 =

= ( 246 - 18 ) × 10 =

= 228 × 10 =

= 2 280