jordanfwtm
29.03.2020 •
Mathematics
Are these equivalent expressions? 4+12x and 25-9x
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Ответ:
No
Step-by-step explanation:
Let's substitute 3 in for x
4+12(3)
4+36=40
25-9(3)
25-27=-2
-2 is not equal to 40, therefore the expressions are not equivalent
Hope this helps! :)
Ответ:
20
Step-by-step explanation:
2
- y
2(
- (-2)
18 + 2
20
hope this helps