a, \(\dfrac{1}{3}+\dfrac{2}{3}:x=-7\) b, \(\left(\dfrac{9}{2}-2x\right).\dfrac{11}{7}=\dfrac{11}{14}\)
\(\dfrac{2}{3}:x=\left(-7\right)-\dfrac{1}{3}\) \(\dfrac{9}{2}-2x\) \(=\dfrac{11}{14}:\dfrac{11}{7}\)
\(\dfrac{2}{3}:x=-\dfrac{22}{3}\) \(\dfrac{9}{2}-2x\) \(=\dfrac{1}{2}\)
\(x=\dfrac{2}{3}.\left(-\dfrac{22}{3}\right)\) \(2x\) \(=\dfrac{9}{2}-\dfrac{1}{2}\)
\(x=-\dfrac{1}{11}\) \(2x\) \(=4\)
\(x\) \(=4:2\)
\(x\) \(=2\)
\(a,\dfrac{1}{3}+\dfrac{2}{3}:x=-7\\ \Rightarrow\dfrac{2}{3}:x=\dfrac{-22}{3}\\ \Rightarrow x=\dfrac{-1}{11}\\ b,\left(\dfrac{9}{2}-2x\right).\dfrac{11}{7}=\dfrac{11}{14}\\ \Rightarrow\dfrac{9}{2}-2x=\dfrac{1}{2}\\ \Rightarrow2x=4\\ \Rightarrow x=2\)
1/3+2/3:x=-7
2/3:x=-7-1/3
2/3:x=-22/3
x=2/3:-22/3
x=-1/11
(9/2-2x)x11/7=11/14
(9/2-2x) =11/14:11/7
(9/2-2x) =1/2
2x =9/2-1/2
2x=4
x=4:2
x=2
\(a:\dfrac{1}{3}+\dfrac{2}{3}:x=-7\\ \dfrac{2}{3}:x=-7-\dfrac{1}{3}\\ \dfrac{2}{3}:x=\dfrac{-22}{3}\\ x=-4\dfrac{8}{9}\\ b:\left(\dfrac{9}{2}-2x\right)\cdot\dfrac{11}{7}=\dfrac{11}{14}\\ \dfrac{9}{2}-2x=\dfrac{1}{2}\\ 2x=\dfrac{9}{2}-\dfrac{1}{2}\\ 2x=4\\ x=2\)
\(\dfrac{1}{3}+\dfrac{2}{3}:x=-7\)
\(\dfrac{2}{3}:x=\left(-7\right)-\dfrac{1}{3}\)
\(\dfrac{2}{3}:x=-\dfrac{22}{3}\)
\(x=\dfrac{2}{3}.\left(-\dfrac{22}{3}\right)\)
\(x=-\dfrac{1}{11}\)
\(\left(\dfrac{9}{2}-2x\right).\dfrac{11}{7}=\dfrac{11}{14}\)
\(\dfrac{9}{2}-2x=\dfrac{11}{14}:\dfrac{11}{7}\)
\(\dfrac{9}{2}-2x=\dfrac{1}{2}\)
\(2x=\dfrac{9}{2}-\dfrac{1}{2}\)
\(2x=4\)
\(x=4:2\)
\(x=2\)
