Question

01) Resolva as seguintes equações do 1º grau.


a) +5x - 2. ( +x -7) -6= +14





b) -( +8x - 1) +6. ( +3x - 10) = +31




c) +4. ( +3x -1) = +2. ( +4x +6) = +4




d) ( +5x +5 +6x +12= +9x +27




e) +14 - 5.( +2x +3) = +3x

Answer 1

Resposta:

a:5x-2.(-7x)-6=14

5x-7x=14+2+6

-2x=20(.-1)

2X=-20

X=20/2

X=10

__________________

B)-(8X-1)+6.(3X-10)=31

-8x-1+6.3x-10=31

-8x+3x=31+1-6+10

-5x=48(.-1)

5x=-48. /48|5

X=48/5. /40|91,6

X= 91,6 /08|

___________/05|

030

0

c+4.3x-1=2+4x+6=14

3x-4x=14-6-2-4+1

-1x=8-2-4+1

-1x=-6-4+1

-1x=11(-.1)

1x=-11

x=11/1

x=11

d)5x+5+6x+12=+9x+27

5x+6x-9x=27-12-5

2x=5

x=5/2

x=2,5

e)+14-5.+2x+3=3x

2x-3x=-3+5-14

-1x=-6(.-1)

1x=6

x=6/1

x=6