me ajudem com a A,B,C,D,E,F,G por favor
A)2x+3X+X+30=120
b)44+44-8Y+104+150=30Y
C)15x+3x+2x-40=230
D)35+45+30+z+z=30-z
E)28+n+30n-n=150
F)5x+10x+2x=x-20
G)35+35+x=-71
Respostas
respondido por:
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A) 2x+3x+x+30=120
6x+30=120
6x=120-30
6x=90
x=90/6
x=15
B) 44+44-8y+104+150=30y
88-8y+254=30y
88+254=30y+8y
342=38y
38y=342
y=342/38
y=9
C) 15x+3x+2x-40=230
20x-40=230
20x=230+40
20x=270
x=270/20
x=13,5
D) 35+45+30+z+z=30-z
2z+z=30-35-45-30
3z=-80
z=-80/3
z=-26,666...
E) 28+n+30n-n=150
31n-n=150-28
30n=122
n=122/30
n=4,0666...
F) 5x+10x+2x=x-20
17x=x-20
17x-x=-20
16x=-20
x=-20/16
x=-1,25
G) 35+35+x=-71
70+x=-71
x=-71-70
x=-141
6x+30=120
6x=120-30
6x=90
x=90/6
x=15
B) 44+44-8y+104+150=30y
88-8y+254=30y
88+254=30y+8y
342=38y
38y=342
y=342/38
y=9
C) 15x+3x+2x-40=230
20x-40=230
20x=230+40
20x=270
x=270/20
x=13,5
D) 35+45+30+z+z=30-z
2z+z=30-35-45-30
3z=-80
z=-80/3
z=-26,666...
E) 28+n+30n-n=150
31n-n=150-28
30n=122
n=122/30
n=4,0666...
F) 5x+10x+2x=x-20
17x=x-20
17x-x=-20
16x=-20
x=-20/16
x=-1,25
G) 35+35+x=-71
70+x=-71
x=-71-70
x=-141
priscilla321:
obgd linda
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