1. Resolva as equações
a)5x-7=3x+15
b)3x-4=2x+10
c)2x-3=7(x-4)
d)7(x+10)=8(x+8)
e)3(x-2)+5=5
f)2(x-6)+7x=5-3(x-2)
a)5x-7=3x+15
b)3x-4=2x+10
c)2x-3=7(x-4)
d)7(x+10)=8(x+8)
e)3(x-2)+5=5
f)2(x-6)+7x=5-3(x-2)
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Resposta:
a) -7-15= -5x+3x
-22 = -2x
22:2= 11
X=11
B) 3x-2x= +4+10
1x = 14
14:1= 14
X=14
(Não tenho certeza das outras, perdão)