3) resolva as seguintes equações
A) 4x=12
B)2x=28
C)45x=135
D)3x=54
E)7x=63
F)6x=-14
4) Resolva as seguintes equações
A) 7x-4=3x
B)-8x-10=14
C)4x+1=2x-7
D)4x-5=3x+2
E)2x-5=6x-5
Soluções para a tarefa
Respondido por
2
3)
A- 3
B-14
C-3
D-18
E-9
F- 2,3333333....
A- 3
B-14
C-3
D-18
E-9
F- 2,3333333....
Respondido por
2
3)
a) 4x=12 x= 12/4
x=3
b)2x=28 x=28/2
x=14
c)45x=135 x= 135/45
x=3
d)3x=54 x= 54/3
x=18
e)7x=63 x= 63/7
x=9
f)6x=-14
x= -14/6 simplificando = -7/3
4)
a)7x-4=3x 7x-3x=4 4x=4 x=4/4
x=1
b)-8x-10=14
-8x=14+10
-8x=24
x=24/-8
x= -3
c) 4x+1=2x-7
4x-2x=-7-1
2x=-8
x=-8/2
x=-4
d)4x-5=3x+2
4x-3x=2+5
x=7
e)2x-5=6x-5
2x-6x=-5+5
-4x=0
x=0
a) 4x=12 x= 12/4
x=3
b)2x=28 x=28/2
x=14
c)45x=135 x= 135/45
x=3
d)3x=54 x= 54/3
x=18
e)7x=63 x= 63/7
x=9
f)6x=-14
x= -14/6 simplificando = -7/3
4)
a)7x-4=3x 7x-3x=4 4x=4 x=4/4
x=1
b)-8x-10=14
-8x=14+10
-8x=24
x=24/-8
x= -3
c) 4x+1=2x-7
4x-2x=-7-1
2x=-8
x=-8/2
x=-4
d)4x-5=3x+2
4x-3x=2+5
x=7
e)2x-5=6x-5
2x-6x=-5+5
-4x=0
x=0
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