Tìm x :
x + 20% x x = 7,2
x x 4 + 1/2 x x = 55,35
40% x x +x x 20% = 72
x - 20% x x = 216
Tìm X,biết:
a)Xx4+1/2xX=55,35
b)X-20%xX=216
Giúp me!!!:)))
X-20%xX=216
Tìm X
a, X + 20% x X = 7,2
b, X x 4 + 1/2 x X= 55,35
c,40% x X + X x 20% = 72
d, X - 20% x X = 216
Tìm X:
a,X-20/11x13 - 20/13x15 - 20/15x17-...-20/53x55 = 3/11
b,1/21 + 1/28 + 1/36 + .....+ 2/Xx(X+1) = 2/9
Tìm x
1. 40% *x+x*20%=72
2. x-20%*x=216
Giải hộ mk bài này nha ai nhanh nhất mk tick cho
tìm x
a, 40%*x+x *20%=72
b, x-20%*x =216
Tìm x : X - 20% x X = 216
Tim X
a,X - 20/11 x 13 - 20/13 x 15 - 20/15 x 17 -...-20/53 x 55 = 3/11
b,1/21 + 1/28 +1/36 + ... +2/Xx(x + 1) = 2/9
