Resolva as igualdades e equaçoes e calcule

a)x+145=100
b)4182÷x=34
c)5·x+65=700
d)7·x-90=491
e)6·x+64=100
f)5·x+12=32
g)8·x-15=25
h)x÷7=34
i)4·x+68=100
j)19·x-645=267
k)400-7·x=274
L)2889÷x=321
m)8x÷23=16
n)45·x=360
o)360÷x=45
p)12·x+56=200
q)75·x-75=1650

obs:o · significa vezes e o x significa que tem que descobrir o numero.




porfavor sem graçinhas eu preciso dessa tarefa pq é atividade avaliativa
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