`x-20% xx x =216`
`=> x-1/5 xx x =216`
`=> x xx (1-1/5)=216`
`=> x xx 4/5 = 216`
`=> x=216:4/5`
`=> x=270`
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`x-20% xx x =216`
`=> x-1/5 xx x =216`
`=> x xx (1-1/5)=216`
`=> x xx 4/5 = 216`
`=> x=216:4/5`
`=> x=270`
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
a) X + 20% x X = 7,2
b) X - 20% x X = 216
Tìm x : X - 20% x X = 216
tìm x
a, 40%*x+x *20%=72
b, x-20%*x =216
x-20%*x=216
x - 20% * x = 216
Tìm X
a)X - 20℅ × X= 216
B)107,8 - X ÷ 950% = 29,2
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
x-20%*x=216