Respuesta:
a) x= 4
b) x= 2
c) y= -1
d) x= (15-3m)/2
e) x= -1
f) x= -4
Explicación:
a) 4x+2x+3=27
6x=27-3
6x=24
x=24/6=4
x=4
b) 5x-8x-3(x-2)=-6
-3x-3x+6=-6
-6x=-6-6
-6x=-12
x=-12/-6=2
x=2
c) 4y-4(5y+4)=2y+2
4y-20y-16-2y=2
-18y=2+16
-18y=18
y=18/(-18)=-1
y= -1
d) 12 +4(x-3)=6(5-m)
12+4x-12=30-6m
4x=30-6m
x=(30-6m)/4
x=2(15-3m)/4
x=(15-3m)/2
e) 5x+4=3-4(x+2)
5x+4=3-4x-8
5x+4x=3-8-4
9x=-9
x=-9/9=-1
f) 3x/2+4x+6=3x-4
3x/2+4x-3x=-4-6
3x/2+x=-10
3x/2+2x/2=-10
5x/2=-10
5x=-10(2)
5x=-20
x=-4
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Respuesta:
a) x= 4
b) x= 2
c) y= -1
d) x= (15-3m)/2
e) x= -1
f) x= -4
Explicación:
a) 4x+2x+3=27
6x=27-3
6x=24
x=24/6=4
x=4
b) 5x-8x-3(x-2)=-6
-3x-3x+6=-6
-6x=-6-6
-6x=-12
x=-12/-6=2
x=2
c) 4y-4(5y+4)=2y+2
4y-20y-16-2y=2
-18y=2+16
-18y=18
y=18/(-18)=-1
y= -1
d) 12 +4(x-3)=6(5-m)
12+4x-12=30-6m
4x=30-6m
x=(30-6m)/4
x=2(15-3m)/4
x=(15-3m)/2
e) 5x+4=3-4(x+2)
5x+4=3-4x-8
5x+4x=3-8-4
9x=-9
x=-9/9=-1
f) 3x/2+4x+6=3x-4
3x/2+4x-3x=-4-6
3x/2+x=-10
3x/2+2x/2=-10
5x/2=-10
5x=-10(2)
5x=-20
x=-4