Question

resolva as seguintes equaçoes:

A- 5.(2x-1)=2.(x+4)

b- 10-2.(x-3)=8+3.(2x+5)

c- x-2.(x-1)=4-3.(x-2)

(o resto esta na foto)

Answer 1

A) 10× - 5 =2× +8
8× =8+5
8×=13
×= 13/8
× =1,625 ou 13/8
B)10 -2× +6=8 + 6×+15
16 -2× = 23 + 6 ×
16 -23 = 2×+6×
7 =8×
× = 07/8
C) ×-2. (×-1)=4-3. (× -2)
× -2× +2 = 4 -3× +6
-× +2 = 10 -3×
-× +3× = 10 -2
2× = 8
× = 4
K) 4×-8+6×-3 =12×-21
--------------------------
12
10×-11= 12×-21
- 11+21 = -10×+12×
10 = 2×
× = 5