Question

helppp va roggg, dau coroanaa​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

10 × [36×3 - 5 × ( 72 - 12×5)] = 480

= 10 × [108 - 5 × ( 72 - 60)] =

= 10 × ( 108 - 5 × 12 ) =

= 10 × ( 108 - 60) =

= 10 × 48 =

= 480

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b)

[27×5 + 4 × ( 14 × 7 - 34)] × 10 = 3 910

= [135 + 4 × ( 98 - 34 )] × 10 =

= ( 135 + 4 × 64 ) × 10 =

= ( 135 + 256 ) × 10 =

= 391 × 10 =

= 3 910

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c)

[44 × 5 + 9 × ( 87 - 19×3)] × 10 = 4 900

= [220 + 9 × ( 87 - 57 )] × 10 =

= ( 220 + 9 × 30 )× 10 =

= ( 220 + 270) × 10 =

= 490 × 10 =

= 4 900

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d)

10 × [65×6 - ( 35×4 - 40)×3] = 900

= 10 × [390 - ( 140 - 40) × 3] =

= 10 × ( 390 - 100×3) =

= 10 × ( 390 - 300) =

= 10 × 90 =

= 900