Question

resolva as equações

A) 5×+8=3×-5
B) 9×-1=9-×
C) 6y+9=3y+7
D) 5p-2=4p+1
E) 3.(2m-1)=4.(m+3)
F) 5.(t-2)=3.(3t-5)
G)2.(5k+3)=4.(2k-1)
H) (5.(2z-4)=6.(2+3)
I)2c/3 + 2/5 = x/4- 1/6
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Answer 1

A)5x+8=3x-5

5x-3x=-5-8

2x=-13

x=-13/2

B)9x-1=9-x

9x+x=9+1

10x=10

x=10/10

x=1

C)6y+9=3y+7

6y-3y=7-9

3y=-2

y=-2/3

D)5p-2=4p+1

5p-4p=1+2

p=3

E)3.(2m-1)=4.(m+3)

6m-3=4m+12

6m-4m=12+3

2m=15

m=15/2

F)5.(t-2)=3.(3t-5)

5t-10=9t-15

5t-9t=-15+10

-4t=-5  multiplicar por -1

4t=5

t=5/4

G)2.(5k+3)=4.(2k-1)

10k+6=8k-4

10k-8k=-4-6

2k=-10

k=-10/2

k=-5

H)[5.(2z-4)=6.(2+3)]

[10z-20=30]

10z=30+20

10z=50

z=50/10

z=5

I)2c/3+2/5=x/4-1/6

mmc entre (3,4,5,6)=60

20.2c+2.12=15.x-5.6

40c+24=15x-30

40c-15c=-30-24

25c=-54

c=-54/25