2[3-9:(-3)+2(5-7)]-18:(-9) giúp

2 câu trả lời

2.[3-9:(-3)+2.(5-7)]-18:(-9)

=2.[3-(-3)+2.(-2)]-(-2)

=2.[3+3+(-4)]+2

=2.[6-4]+2

=2.2+2

=4+2

=6

2[3 - 9 : (-3) + 2(5 - 7)] - 18 : (-9)

= 2[3 + 3 + 2(-2)] + 2

= 2[6 + (-4)] + 2

= 2(6 - 4) + 2

= 2 . 2 + 2

= 4 + 2

= 6

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