Trang chủ » Hỏi đáp » Môn Toán a) 2/3+1/3:x = -3/4 b) x/-4 = -9/5 c) 2(x-2/5)^3 = -16/27 SOSSSSSSS 03/03/2024 a) 2/3+1/3:x = -3/4 b) x/-4 = -9/5 c) 2(x-2/5)^3 = -16/27 SOSSSSSSS
a) 23 + 13 : x =-34 ⇒ 13 : x = -34 – 23⇒ 13 : x = -1712⇒ x = 13 : -1712⇒ -417 b) x−4 = -−95⇒ x × 5 = -9 × -4⇒x=36 ÷ 5⇒ x= 365 c) 2(x-25 )^3 = −1627 ⇒(x-25 )^3 = −1627 ÷ 2⇒(x-25 )^3 = −827⇒ x-25 = −23 ⇒x = 25 + −23 ⇒x=−415 Trả lời
a) 2/3+1/3:x=-3/4 =>1/3:x=-3/4-2/3 =>1/3:x=-17/12 =>x=1/3:(-17/12) =>x=-4/17 Vậy x=-4/17 b) x/(-4)=-9/5 =>x.5=(-4).(-9) =>x.5=36 =>x=36/5 Vậy x=36/5 c) 2.(x-2/5)^3=-16/27 =>(x-2/5)^3=(-16/27):2 =>(x-2/5)^3=-8/27 =>(x-2/5)^3=(-2/3)^3 =>x-2/5=-2/3 =>x=-2/3+2/5 =>x=-4/15 Vậy x=-4/15 Trả lời
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