3 years ago

7+4u=70-3u What is U

2 answers:

5 0

$7+4u=70-3u \\ 7+4u+3u=70-3u+3u \\ 7+7u=70 \\ 7-7+7u=70-7 \\ 7u=63 \\ 7u/7=63/7 \\ u=9$
u=9 is your answer.
Hope this helps!

3 0

7+4u= 70-3u
add 3u to both sides
7+7u=70
subtract 7 from both sides
7u=63
divide both sides by 7
u= 9

hope this helps

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