2x - 15 = 17
2x = 17 + 15
2x = 32
2x = 25
x = 5
2x - 15 = 17
2x = 17 + 15
2x = 32
2x = 25
x = 5
2x - ( - 17 ) = 15
Help me please ! Tìm x :
2x - 35 = 15
3x + 17 = 20
( x - 1 ) + 5 = 17
( x + 2 ) : 4 = 28
124 + ( 118 - x ) = 217
814 - ( x - 305 ) = 712
15/17< 17/...< 15/16
1) \(2x-\frac{4}{3}-\frac{4}{15}-\frac{4}{35}-\frac{4}{63}-\frac{4}{99}=\frac{15}{17}\)
2)\(\frac{10}{1\cdot2\cdot3}+\frac{10}{2\cdot3\cdot4}+\frac{10}{3\cdot4\cdot5}+.....+\frac{10}{100\cdot101\cdot102}\)
Các phân số 99/100 ; 61/62 ; 43/45 ; 15/17 viết theo thứ tự từ bé đến lớn là
A. 15/17; 43/45 ; 61/62 ; 99/100
B. 99/100; 61/62; 43/45; 15/17
C. 15/17; 61/62; 43/45; 99/100
D. 43/45; 61/62; 15/17; 99/100
9/5:17/15+8/5:17/15
9/5:17/15+8/5:17/15
(9/15+ 8/11) + 6/15=
(26/17+15/34) + ( 8/17 + 19/34) =
9/21+7/15+8/17+17/21+23/15
Tính nhanh:9/5:17/15+8/5:17/15