Câu hỏi của Rosé

Question

bài 3 tìm x a x . ( - 9 ) = 18b 86 - ( x + 3 ) . 3 = 6

Chuu · Accepted Answer

`x.(-9)=18``x=18: (-9)``x= 2`_______________`86 - (x + 3).3 = 6``(x+3).3 = 86-6``(x+3).3 = 80``x+3 = 80 : 3``x+3=80/3``x=80/3 - 3``x=71/3`Câu trả lời: `x.(-9)=18``x=18: (-9)``x= 2`_______________`86 - (x + 3).3 = 6``(x+3).3 = 86-6``(x+3).3 = 80``x+3 = 80 : 3``x+3=80/3``x=80/3 - 3``x=71/3`

⭐Hannie⭐ · Answer

$x . ( - 9 ) = 18$$x = 18 :( - 9 )$$x=-2$$----------------$$86 - ( x + 3 ) . 3 = 6$$86 - ( x + 3 ) = 6: 3$$86 - ( x + 3 ) =2$$  x + 3 =86 -2$$ x + 3 =84$$ x  =84- 3$$ x  =81$Câu trả lời: $x . ( - 9 ) = 18$$x = 18 :( - 9 )$$x=-2$$----------------$$86 - ( x + 3 ) . 3 = 6$$86 - ( x + 3 ) = 6: 3$$86 - ( x + 3 ) =2$$  x + 3 =86 -2$$ x + 3 =84$$ x  =84- 3$$ x  =81$

Phong Jr. · Answer

a,x.(−9)=18x.(−9)=18x=18:(−9)x=18:(−9)x=−2x=−2Vậy x=-2b,86−(x+3).3=686−(x+3).3=686−(x+3)=6:386−(x+3)=6:386−(x+3)=286−(x+3)=2x+3=86−2x+3=86−2x+3=84x+3=84x=84−3x=84−3x=81Vậy x=81Câu trả lời: a,x.(−9)=18x.(−9)=18x=18:(−9)x=18:(−9)x=−2x=−2Vậy x=-2b,86−(x+3).3=686−(x+3).3=686−(x+3)=6:386−(x+3)=6:386−(x+3)=286−(x+3)=2x+3=86−2x+3=86−2x+3=84x+3=84x=84−3x=84−3x=81Vậy x=81

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