12 - 2.(x - 4) = 13.22
12 - 2.(x - 4) = 13.4
12 - 2.(x - 4) = 52
2.(x - 4) = 12 - 52
2.(x - 4) = (-40)
x - 4 = (-40) : 2
x - 4 = (-20)
x = (-20) + 4
x = (-16)
tính hợp lí
a)2016.(-4)-(-1008).8
b)(3^2016,11+3^2018.5):(3^2017.4^2)
c)(34/7.13+51/13.22+85/22.37+68/39.49):(39/7.16+65/16.31+52/31.43+26/43.49)
tính tổng
A = 34/7.13 + 51/13.22 + 85/22.37 + 68/37.49
B = 39/7.16 + 65/16.31 + 52/31.43 + 26/43.49
C = 4/8.13 + 4/13.18 + 4/18.23 + ..... + 4/252.258
mik cảm ơn mấy bn nhiều
A= 34/7.13+51/13.22+85/22.37+68/37.49 = ?
A= 34/7.13+51/13.22+85/22.37+68/37.49 = ?
Cho
A=34/7.13+51/13.22+85/22.37+68/37.49
Tính :(34/7.13+51/13.22+85/22.37+68/37.49):(39/7.16+65/16.31+52/31.43+26/43.49
ChoA=34/7.13+51/13.22+85/22.37+68/37.49
B=39/7.16+65/16.31+52/31.43+26/43.49
A=34/7.13+51/13.22+85/22.37+68/37.49
B=39/7.16+65/16.31+52/31.43+26/43.29.
tính A:B
1, \(Cho:\)\(A=\frac{34}{7.13}+\frac{51}{13.22}+\frac{85}{22.37}+\frac{68}{37.49}\) và \(B=\frac{39}{7.16}+\frac{65}{16.31}+\frac{52}{31.43}+\frac{26}{43.49}\)
\(Tính\)\(A:B\)
2, So sánh 3111 và 1714
3, Tìm p là số nguyên tố sao cho 5p + 3 cũng là số nguyên tố
4, Tìm x, nếu:
\(|x+3|+|x+7|=3.x\)
