x - 20%.x = 216
<=> 80%.x = 216
x = 216 : 80.100 = 270
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x - 20%.x = 216
<=> 80%.x = 216
x = 216 : 80.100 = 270
x - 20% x x = 216
a) X + 20% x X = 7,2
b) X - 20% x 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 : X - 20% x X = 216
x-20%*x=216
tìm x
a, 40%*x+x *20%=72
b, x-20%*x =216
Tìm X
a)X - 20℅ × X= 216
B)107,8 - X ÷ 950% = 29,2
tìm x
x-20%*x=216
X-20%xX=216