Question

Решите уравнение номер в)

Answer 1

0,5 = 1/2 
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3/4(0,5 * х + 2/3) = 3х + 2 1/4
3/4 * 1/2 * х + 3/4 * 2/3 = 3х + 2 1/4
3/8х + 2/4 = 3х + 2 1/4
3/8х - 3х = 2 1/4 - 2/4
- 2 5/8х = 1 3/4
- 21/8х = 7/4
х = 7/4 : (- 21/8)
х = 7/4 * (- 8/21)
х = - 2/3