Question

_1e a solução das equações. a)-7×=7 e -3+3=0B)-7×=7 e -3×-3=0C)-7×=_7 e -3×_3=0D)-7×=_7 e -3×+3=0

Answer 1

a) -7x=7
x=7/7
x= 1

-3x+3=0
-3x= -3.(-1)
3x = 3
x=3/3
x=1

b) -7x=7
x=7/7
x=1

-3x-3=0
-3x= 3.(-1)
3x = -3
x=-3/3
x=-1

c)-7x=-7
x= -7/7
x= -1

-3x-3=0
-3x= +3.(-1)
3x= -3
x= -3/3
x= -1

d) -7x=-7
x=-7/7
x= -1

-3x+3=0
-3x= -3 .(-1)
3x= 3
x= 3/3
x= 1