Question

ME AJUDEM
resolva as equações (com conta pfvr)

a)-x+7=0
b)3x+1=12
c)4x-3=1/2
d)2x-3=17
e)x+5-0
f)x+4=3
g)x-2=-3
h)4x=28
i)-7x-1=-15
j)-4x-3=11

Answer 1

a) -x+7=0
-x=7-0 .(-1)
x= 0+7
x=7

b) 3x+1=12
3x= 12-1
3x= 11
x= 11/3
x= 3,66

c) 4x-3=1/2
4x= 1/2-3
4x= 0,5-3
4x= -2,5
x= -2,5/4
x= -0,62