12 { [ 18 - ( 6 : x + 3 ) ] - 3 } = 130 - 10 = 120
18 - ( 6 : x + 3 ) - 3 = 120 : 12 = 10
18 - ( 6 : x + 3 ) = 10 + 3 = 13
6 : x + 3 = 18 - 13 = 5
6 : x = 5 - 3 = 2
x = 6 : 2 = 3
Vậy x = 3
130 - 12{[18 - (6 : x + 3)] - 3} = 10
12{[18 - (6 : x + 3)] - 3} = 130 - 10
12{[18 - (6 : x + 3)] - 3} = 120
18 - (6 : x + 3) - 3 = 120 : 12
15 - (6 : x + 3) = 10
6 : x + 3 = 15 - 10
6 : x + 3 = 5
6 : x = 5 - 3
6 : x = 2
x = 6 : 2
x = 3
Vậy x = 3
130 - 12{[18 - (6 : x + 3)] - 3} = 10
12{[18 - (6 : x + 3)] - 3} = 130 - 10
12{[18 - (6 : x + 3)] - 3} = 120
18 - (6 : x + 3) - 3 = 120 : 12
15 - (6 : x + 3) = 10
6 : x + 3 = 15 - 10
6 : x + 3 = 5
6 : x = 5 - 3
6 : x = 2
x = 6 : 2
x = 3
Vậy x = 3
\(130-12\left\{\left[18-\left(6:x+3\right)\right]-3\right\}=10\)0
\(12\left\{\left[18-\left(6:x+3\right)\right]-3\right\}=130-10\)
\(\left[18-\left(6:x+3\right)\right]-3=120:12\)
\(18-\left(6:x+3\right)=10+3\)
\(6:x+3=18-13\)
\(6:x=5-3\)
\(x=2.6\)
\(x=12\)
Mk làm hơi tắt chút xíu mong bạn thông cảm nha
\(Nhầm\)
\(6:x=5-3\)
\(x=6:2\)
\(x=3\)
Vừa mk làm nhầm xin lỗi nha!