Question

resolva as equações:
a) 5x + 3x = 16
b) x + x + 8 = 54
c) 7x - 2 - 5x = 18
d) 12x - 10x - 4 = 3
e) - x - 2x - 4 = 11
f) 8x = 5x + 4,5

Answer 1

Resposta:

5× + 3x =16

8×=16

8 x= 2

x+x+8= 54

2×=54-8

46

12× - 10× - 4 = 11

2× = 11+ 4

15

2 = 7,5

-×- 2x - 4= 11

3x= 11 + 4

15

3 = 5

8x= 5x + 4,5

8× - 5x = 4,5

3x 4,5

3 = 1,50