Simplifique as expressões
a) x-5+2x
b) 6.(2 - d)
c) 7c + 4 - 8 - 3c
d) - 9y + 2 . (5y - 2)
e) 4s + 3s . (20 : 5) + 6
f) (4 + 3t) . 3 - 8t - 7
Soluções para a tarefa
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a)x-5+2x=3x-5
b)6*(2-d)=6*2-6*d=12-6d=6-d
c)7c+4-8-3c= 4c-4= c-1
d) -9y+2(5y-2)= -9y+10y-4=y-4
e)4s.+3s(20/5)+6= 4s+3s*4+6= 4s+12s+6= 16s+6= 8s+3
f) (4+3t)*3 -8t-7= 3*4+3*3t-8t-7= 12+9t-8t-7= t+5
b)6*(2-d)=6*2-6*d=12-6d=6-d
c)7c+4-8-3c= 4c-4= c-1
d) -9y+2(5y-2)= -9y+10y-4=y-4
e)4s.+3s(20/5)+6= 4s+3s*4+6= 4s+12s+6= 16s+6= 8s+3
f) (4+3t)*3 -8t-7= 3*4+3*3t-8t-7= 12+9t-8t-7= t+5
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