\(\dfrac{38}{24}:\left(-3\right)=-\dfrac{19}{36}\)
Tính M=1/3.8+1/8*13+1/13*18+...+1/33*38;
N=1/3*10+1/10*17+1/17*24+1/24*31+1/31+38
5/lxl-4/3=38/24
107- { 38 + [7. 3 2 - 24: 6 + (9-7) 3 ]}: 15
giúp mình vơi
107-{38-[7x3^2-24:6+(9-7)^3]}:15
107−{38+[7.3^2−24÷6+(9−x)^3]}÷15
107-{38+[7.3^2-24:6+(9-7)^3]}:15
107-{38+[7.32-24:6+(9-7)3]}:12
giải cho mình đi
1) -145.(13 - 57) + 57.(10 -145)
2) 17.(15 - 16) + 16.( 17- 20)
3) -38.(25 - 4) + 25.(-4 + 38 )
4) 23.(145 - 17) - 145.(23 - 6)
5) 24.(15 - 4) + 4.(24 - 15)
6) 199.(15 - 17) - 199.(-17 + 5)
7) -39.(5 - 99) + 99.(10 - 39)
Tìm a biết rằng khi chia 24 , 38 cho a đều dư 3
