Rozwiąż równanie 2 ( 4 x − 5 ) = 18 {\displaystyle 2(4x-5)=18}
2 ( 4 x − 5 ) = 18 / : 2 {\displaystyle 2(4x-5)=18\quad /:2}
4 x − 5 = 9 / + 5 {\displaystyle 4x-5=9\quad /+5}
4 x = 14 / : 4 {\displaystyle 4x=14\quad /:4}
x = 3 1 2 {\displaystyle x=3{\frac {1}{2}}}
Rozwiąż równanie 2 x − 3 5 = 3 5 − 2 x {\displaystyle {\frac {2x-3}{5}}={\frac {3}{5}}-2x}
2 x − 3 5 = 3 5 − 2 x / ⋅ 5 {\displaystyle {\frac {2x-3}{5}}={\frac {3}{5}}-2x\quad /\cdot 5}
2 x − 3 = 3 − 10 x / + 10 x {\displaystyle 2x-3=3-10x\quad /+10x}
12 x − 3 = 3 / + 3 {\displaystyle 12x-3=3\quad /+3}
12 x = 6 / : 12 {\displaystyle 12x=6\quad /:12}
x = 1 2 {\displaystyle x={\frac {1}{2}}}
