๖ACE✪MVP༻꧂.thấy tên đẹp thi cho mình 1 tích
2 * (x + 7) - 16 = 18
2 * (x +7) = 18 + 16 = 34
x + 7 = 34 : 2 = 17
x = 17 - 7 = 10
(x - 8:2) = 165 - 75
x- 4 = 90
x = 90 + 4 = 94
4 * x + 2 * x = 138
x * (4 + 2) = 138
x * 6 = 138
x = 138 : 6 = 23
Bài 1:
2 * (x+7) - 16 = 18
2 * (x+7) = 34
x + 7 = 17
x = 10
Bài 2:
(x - 8 : 2) = 90
x - 4 = 90
x = 94
Bài 3:
4 * x + 2 * x = 138
6 * x = 138
x = 138 : 6
x = 23
Ủng hộ nha
\(2\times\left(x+7\right)-16=18\)
\(\Rightarrow2\times\left(x+7\right)=34\)
\(\Rightarrow x+7=17\)
\(\Rightarrow x=10\)
\(\left(x-8:2\right)=165-75\)
\(\Rightarrow x-4=90\)
\(\Rightarrow x=94\)
\(4\times x+2\times x=138\)
\(\Rightarrow6\times x=138\)
\(\Rightarrow x=23\)
