Question

calculeaza respectand regulile învățate
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Answer 1

Răspuns:

a)99-45:(6+3)+36

==>99-45:9+36

99-5+36

94+36=130

b)84:4×(72:9+5×5)-54:6

21×(8+25)-9

21×33-9

=693-9=684

c)(7+9)×(81:9)

16×9==>144

Answer 2

1. 99-45:(6+3)+ 36= 130
= 99-45:9+36
= 99-5+36
= 94 + 36
= 130

2. 84:4•( 72:9+5•5)-54:6= 684
= 21• ( 8+25 ) - 9
= 21• 33 -9
= 693-9
= 684

3. ( 7+9 ) • ( 81:9 )= 144
= 16 • 9
= 144