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-Dominant- [34]
3 years ago
11

Help me! 7 + x = 21 x = ?

Mathematics
2 answers:
MatroZZZ [7]3 years ago
5 0
The anawer should be 14 because 7+14=21
NemiM [27]3 years ago
3 0
Solve for x:-

7 + x = 21
x = ?
Inverse operation
21 - 7 = x
21 - 7 = 14
x ⇒ 14

Check:-
7 + x = 21
x ⇒ 14
7 + 14 = 21
Yes, correct!

x ⇒ 14
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pav-90 [236]
Since the two equations equal y, set them equal to each other.

x-1=-2x+5

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First get x on one side, by using the addition property of equality.

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