completa los espacios en las siguientes ecuaciones:
a) x - 4 = 3
x-4+__=3+__
x=7
b)-2+x=4
-2+x__2=4__2
x=6
C)x-7=-2
x-7+7=-2+7
x=__
a) x - 4 = 3
x-4+__=3+__
x=7
b)-2+x=4
-2+x__2=4__2
x=6
C)x-7=-2
x-7+7=-2+7
x=__
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Explicación paso a paso:
X-4+4=3+4
-2+x-2=4+2
X=9
Verified answer
Respuesta:
a) x - 4 = 3
x - 4 + 4 = 3 + 4
x = 7
b) -2 + x = 4
-2 + x + 2 = 4 + 2
x = 6
C) x - 7 = -2
x - 7 + 7 = -2 + 7
x = 5