Ответ:
1. 5х + 12 = 324; 5x=324-12; 5x=312; x=62,4
2. 7х= -10 + 2х; 7x-2x=-10; 5x=-10; x=-2
3. 5х – 18 = 10х +22; 5x-10x=22+18; -5x=40; x=-8
4. 1/3а – 2 = 5 – 2/3а; 1/3a+2/3a=5+2; x=7
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Answers & Comments
Ответ:
1. 5х + 12 = 324; 5x=324-12; 5x=312; x=62,4
2. 7х= -10 + 2х; 7x-2x=-10; 5x=-10; x=-2
3. 5х – 18 = 10х +22; 5x-10x=22+18; -5x=40; x=-8
4. 1/3а – 2 = 5 – 2/3а; 1/3a+2/3a=5+2; x=7