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Can someone explain #1 and #2 to me? (Picture above) I really need help

Can someone explain #1 and #2 to me? (Picture above) I really need help
141k views
1 vote
Can someone explain #1 and #2 to me? (Picture above) I really need help

Can someone explain #1 and #2 to me? (Picture above) I really need help-example-1
User Naren Verma
by
8.5k points

1 Answer

5 votes
A number can replaced with a variable like x
(X+3)4=16
4x+12=16
4x=4
X=1
(X/4)+3=24
X/4=21
X=84
User Yoona
by
8.3k points
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