Question

A raiz da equação 2x - 3. (4 - x) = 5 + 4. (2x + 1) é:

Answer 1

Oie, Td Bom?!

2x - 3(4 - x) = 5 + 4(2x + 1)

2x - 12 + 3x = 5 + 8x + 4

5x - 12 = 9 + 8x

5x - 8x = 9 + 12

- 3x = 21

x = 21/-3

x = - 21/3

x = - 7

Att. Makaveli1996