Question

Me ayudan por favor en algunas de estas ecuaciones ...

b-8=5(b+4)
8-4c=3(5-c)
2(d-4)=3(d+1)
3(e+5)=e+7
4(F+2)=2(f-1)
4(a+5)=8
2(M+2.5)=4(m-0.5)

Answer 1

b-8=5(b+4)
-4b=28
-b=7---------------b=-7negativo
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8-4c=3(5-c)
8-4c=15-3c
-7=c----------------c=-7negativo
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2(d-4)=3(d+1)
2d-8=3d+3
-5=d----------------d=-5negatibo
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3(e+5)=e+7
3e+15=e+7
8=-2e
-e=4-----------------e=-4negativo
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4(f+2)=2(f-1)
4f+8=2f-2
-2f=10
f=-10-----------------f=-10 negatibo
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4a+20=8
4a=16
a=-4-----------------a=-4negatibo
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2m+5=4m-2
2m=7
m=7/2------------>i si se deja en dibision
m=3.5--------------> en decimales