Question

Urgenteeee Alguém???

Answer 1

Resposta:

1.

a) 3x+1=10-4x

3x+4x=10-1

7x=9

x=$\frac{9}{7}$

b) 5x+6=5-7x+2

5x+6=7-7x

5x+7x=7-6

12x=1

x=$\frac{1}{12}$

c) $\frac{6x-10}{3}=\frac{8x-2}{2}$

12x-20=24x-6

24x-12x=-20+6

12x=-14

x=$\frac{-14}{12}$ (÷2)

x=$\frac{-7}{6}$

d) $\frac{3-x}{4}=\frac{8-2x}{6}$

18-6x=32-8x

8x-6x=32-18

2x=14

x=$\frac{14}{2}$

x=7