a) X + 20% x X = 7,2
100% X + 20% x X = 7,2
( 100% + 20% ) x X = 7,2
120% x X = 7,2
X = 7,2 : 120%
X = 6
b) X - 20% x X = 216
100% X - 20% x X = 216
( 100% - 20% ) x X = 216
80% x X = 216
X = 216 : 80%
X = 270
tìm x
a, 40%*x+x *20%=72
b, x-20%*x =216
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
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℅ × X= 216
B)107,8 - X ÷ 950% = 29,2
x - 20% x x = 216
Tìm x : X - 20% x X = 216
x-20%*x=216
x - 20% * x = 216
Tìm x
x * 4 + 1/2 * x = 55,35
40% * x + x * 20% = 72
x - 20% * x = 216
