Question

DETERMINE A SOLUÇÃO DESTAS EQUAÇÃO ?

24) X+X=8
25) 7X+2=6+2X
26) 3X-8=8-X
27) -5X-35=6-4X+8
28) 5X=2X+3

Answer 1

Olá,

24)

x+x = 8
2x = 8
2x/2 = 8/2
x = 4

25)

7x+2 = 6+2x
7x-2x = 6-2
5x = 4
5x/5 = 4/5
x = 4/5

26)

3x-8 = 8-x
3x+x = 8+8
4x = 16
4x/4 = 16/4
x = 4

27)

-5x-35 = 6-4x+8
-5x-35 = 14-4x
-5x+4x = 14+35
-x = 49
x = -49

28)

5x = 2x+3
5x-2x = 3
3x = 3
3x/3 = 3/3
x = 1