等式や比例式の性質を使って一次方程式を解く練習をしましょう。
次の方程式を解きなさい。
x = 31 {\displaystyle x=31}
x = 3 {\displaystyle x=3}
x = 7 {\displaystyle x=7}
x = 7 4 {\displaystyle x={\frac {7}{4}}}
x = 5 2 {\displaystyle x={\frac {5}{2}}}
x = − 6 {\displaystyle x=-6}
x = 9 {\displaystyle x=9}
x = 11 {\displaystyle x=11}
x = − 4 {\displaystyle x=-4}
x = 20 3 {\displaystyle x={\frac {20}{3}}}
x = 1 2 {\displaystyle x={\frac {1}{2}}}
x = 32 5 {\displaystyle x={\frac {32}{5}}}