Question

01- Resolva as equações:
a) 2 ( 3X+5 ) =28
b) 3 ( X-1 ) =15
c) 2X+4 • ( 38-X ) =136
d) -4 ( X-2 ) =4+2 • ( X+4 )
e) 5 ( Y+1 ) -3 ( 2Y+1 ) =4 • ( 5-Y )

02- Resolva:
a) 2-3X = -9-4X
b) 350X -500 =100X+750
c) X+5,41 =3,87
d) 3 ( 2X-1 ) =-2 ( X+3 )
e) 4 ( X+10 ) -2 ( X-5 ) =0
f) 3,5X+8 =2 ( X+7 )

Answer 1

1a)6x+10=28

6x=28-10

6x=18

x=18/6

x=3

b)3x-3=15

3x=15-3

3x=12

x=12/3

x=4

c)