SOLVE FOR X: 18 - X = 2X - 3
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Answer:
7=x
Step-by-step explanation:
18-x=2x-3
+3-x=2x+3
* Combined like terms. ( 18 and -3)
(since it was negative it will now become positive)
[so 18 + 3 is = 21 and -3 + 3 is O so cancel it]*
* Do it also to x and 2x*
21-x=2x
+x=+x
________
21 = 3x
---- = ----
3 3
7 = x
To check:
18-x= 2x-3
18-7 = 2(7)-3
11= 14-3
11= 11✓