800=x+175/5+30
770=x+175/5
x+175=3850
x=22
800=x+175/5+30
770=x+175/5
x+175=3850
x=22
Tìm x biết 460+85x4=x+175:5+30
Tìm x biết 460+85x4={x+175}:5+30
Tìm x biết 460+85x4={x+175}:5+30
Tìm x:460+85*=x+175/5+30
Lưu ý :dấu / là dấu gạch phân số
460 + 85 *4 = x +175 /5 + 30
460 + 85 x 4 = x + 175 / 5 + 30
(giúp mik nha mn ) c.ơn mn nhìu
1.Tìm A biết:
460+85x4=A+200/4
2.Tìm y biết:
(2/11x13+2/13x15+2/15x17+2/17x19+2/19x21)x462-y=19
Bài 1:
\(a,\left(x-\frac{1}{2}\right)\cdot\left(\frac{1}{2}+\frac{1}{6}+\frac{1}{12}+\frac{1}{20}+......+\frac{1}{90}\right)=\frac{1}{3}\)
\(b,\frac{1}{1\cdot6}+\frac{1}{6\cdot11}+.....+\frac{1}{96\cdot101}=\frac{1}{10\cdot x}\)
\(c,460+85\cdot4=\frac{x+175}{5}+30\)
\(d,\left(x-5\right)\cdot\left(10-9\frac{40}{41}\right):\left(1-\frac{81}{82}\right):\left(1-\frac{204}{205}\right)=2050\)
Tìm x :
a) (285 - x - 0,15 ) : 0,25 = 15 : 0,25
b) 520 + 30 =\(\frac{x+175}{5}\) + 30