sweetheart400
sweetheart400
12-10-2017
Mathematics
contestada
100-x+300=200
how do I solve for x
Respuesta :
FaithHouse
FaithHouse
12-10-2017
100 − x
+ 300
= 200
1: Simplify both sides of the equation.
100 − x
+ 300
= 200
100 +
−x
+ 300
= 200
(
−x
)
+
(
100 + 300
)
= 200
(Combine Like Terms)
−x
+ 400
= 200
−x
+ 400
= 200
2: Subtract 400 from both sides.
−x
+ 400
− 400
=
200 − 400
−x
=
−200
3: Divide both sides by -1.
−x
−1
=
−200
−1
x =
200
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