Question

Examinaţi şi continuaţi rezolvarea:
2(x-3)+4=82(x-3)=8-4
a)
b) 6-0,5(1-x) =20,5(1-x) =
Helppppp

Answer 1

A.

$2(x - 3) + 4 = 82(x - 3) = 4 \\ 2x - 6 + 4 = 82x - 246 = 4 \: = > 2x - 2 = 4 \: \\ si \: 82x - 246 = 4 \\ x = \frac{6}{2} x = 3 \: \\ si \: x = \frac{250}{82} \\ cred \: ca \: ai \: scris \: gresit$

B.

$6 - \frac{5}{10} (1 - x) = \frac{205}{10} (1 - x) \\ 6 - \frac{5}{10} + \frac{5x}{10} = \frac{205}{10} - \frac{205x}{10} \\ \frac{205}{10} + \frac{5}{10} - 6 = \frac{205x + 5x}{10} \\ \frac{210}{10} - 6 = \frac{210x}{10} \\ 21 - 6 = 21x \\ 15 = 21x \\ x = \frac{15}{21} \\ x = \frac{5}{7}$