Question

2x-3supra 2-x-2supra5=3x+12 supra 5+9 supra 2 dau coroana si 100 puncte

Answer 1

$\frac{2x - 3}{2} - \frac{2}{5} = \frac{3x + 12}{5} + \frac{9}{2} \\ se \: aduce \: la \: acelasi \: numitor(acesta \: fiind \: 10) \\ se \: amplifica \: fractiile \: pe \: rand \: cu \: 5.2.2.5 \\ 5(2x - 3) - 2 \times 2 = 2(3x + 12) + 5 \times 9 \\ 10x - 15 - 4 = 6x + 24 + 45 \\ 10x - 6x = 45 + 24 + 4 + 15 \\ 4x = 69 + 19 \\ 4x = 88 \\ x = \frac{88}{4} \\ x = 22$