Toán Lớp 6: a, |x+1/3| ÷2=32 b, 2/3.(3x-2)+25%=-9/6 c, 2/3.3/2.(x-1/2)=15/12

Question

Toán Lớp 6:  a,  |x+1/3| ÷2=32                                                 b,   2/3.(3x-2)+25%=-9/6 c,   2/3.3/2.(x-1/2)=15/12                                     d,   x-19/13 =13/5

hoquyly · Answer

Lời giải và giải thích chi tiết:   a) |x+1/3|:2= 32       |x+1/3|=32.2       |x+1/3|=64   TH1: |x+1/3|=64   x=191/3   TH2: |x+1/3|=-64   x=-191/3

diepbich93 · Answer

Giải đáp:     a, |x+1/3| &divide;2=32    -> |x+1/3| = 32&times;2    -> |x+1/3| = 64    +, x+1/3 = 64    -> x = 191/3 +, x+1/3 = -64    -> x = -193/3 Vậy x &isin; {-193/3 ; 191/3 }  b, 2/3.(3x-2)+25%=-9/6 -> 2/3 . (3x-2) = -9/6 - 25% -> 2/3 . (3x-2) = -7/4 -> 3x-2 = -21/8 -> 3x = -5/8 -> x = -5/24 Vậy x = -5/24 c, 2/3 . 3/2.(x-1/2)=15/12 -> 1 . (x-1/2) = 15/12 -> x-1/2 = 15/12 -> x = 7/4 Vậy x=7/4 d,  x-19/13 =13/5  -> x= 13/5 + 19/13 -> x = 134/15 Vậy  x = 134/15 Go od luck!