a) x = 926 - (162 nhân 3)
x = 440
b) x : 4 = 915 + 138
x = 1053 nhân 4
x = 4212
c)x = 3/7 : 1/2
x = 6/7
d)x = 7/2 - 1/4
x = 13/4
a)\(x+162x3=926\) b)\(\frac{3}{7}:x=\frac{1}{2}\) c)\(x:4-138=915\) d)\(\frac{7}{2}-x=\frac{1}{4}\)
\(x+486=926\) \(x=\frac{3}{7}:\frac{1}{2}\) \(x:4=915+138\) \(x=\frac{7}{2}-\frac{1}{4}\)
\(x=926-486\) \(x=\frac{6}{7}\) \(x:4=1053\) \(x=\frac{13}{4}\)
\(x=440\) \(x=1053x4\)
\(x=4212\)
Bn ơi,dễ lắm
\(x+162x3=926\)
\(\Rightarrow x+486=926\)
\(\Rightarrow x=926-486=440\)
\(x:4-138=915\)
\(\Rightarrow x:4=915+138=1053\)
\(\Rightarrow x=1053x4=4212\)
\(\frac{3}{7}:x=\frac{1}{2}\)
\(x=\frac{3}{7}:\frac{1}{2}=\frac{3}{7}x2\)
\(\Rightarrow x=\frac{6}{7}\)
\(\frac{7}{2}-x=\frac{1}{4}\)
\(\Rightarrow x=\frac{7}{2}-\frac{1}{4}\)\(=\frac{14}{4}-\frac{1}{4}\)
\(\Rightarrow x=\frac{13}{4}\)
k mk nhé
x +162 nhân 3 = 926(x=440|) x : 4 - 138 = 915 (x=4212)
3/7 : x = 1/2 (x=6/7) 7/2 - x = 1/4(x=13/4)
a. x +(162 * 3) = 926 b. x : 4 - 138 = 915
x + 486 = 926 x :4 = 915 -138
x = 926 - 486 x :4 = 777
x = 440 x = 777 * 4
x = 3108
c. 3/7 : x =1/2 d. 7/2 -x = 1/4
x = 3/7 : 1/2 x = 7/2 - 1/4
x = 6/7 x = 13/4
x+486=926
x=926-486=440
3/7:x=1/2
x=3/7:1/2
x=3/7.2/1
x=6/7
x:4-138=915
x:4=138+915
x=1053.4=4212
7/2-x=1/4
x=7/2-1/4
x=13/4
