1. x-\(\frac{1}{3}\)= \(\frac{4}{9}\)
x = \(\frac{4}{9}\)+\(\frac{1}{3}\)
x = \(\frac{7}{9}\)
Vậy x= \(\frac{7}{9}\)
CHúc bạn hok tốt mk lm tạm câu 1 đã
4. 2x-1/5=1/7
2x=1/7+1/5
2x=12/35
x=12/35:2
x=6/35
Vậy x=6/35
1. x-1/3=4/9
x=4/9+1/3
x=7/9
Vậy x=7/9
chúc pan hk tốt nha mk ms giải đc 2 câu thui ak hihj
1, x=7/9
2, x=-6/7
3, x=-20,x=1.25
4, x=6/35
1.\(\Rightarrow\left(x-1\right).9=3.4\)
\(9x-9=12\)
\(9x=12-9\)
\(9x=3\)
\(x=3:9\)
\(x=\frac{1}{3}\)
2.\(2.3=\left(x+1\right).\left(-4\right)\)
\(6=-4x.\left(-4\right)\)
\(-4x=6:\left(-4\right)\)
\(-4x=\frac{-3}{2}\)
\(x=\frac{-3}{2}:\left(-4\right)\)
\(x=\frac{3}{8}\)
3.\(\left(x+5\right).4=\left(x-6\right).1\)
\(4x-20=x-6\)
\(4x-x=\left(-6\right)+20\)
\(3x=14\)
\(x=\frac{14}{3}\)
4.\(2x=\frac{1}{7}+\frac{1}{5}\)
\(2x=\frac{12}{35}\)
\(x=\frac{12}{35}:2\)
\(x=\frac{6}{35}\)
