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Sagot :
Answer:
B) a + 2(a - 3) = 15
Step-by-step explanation:
To see which equation has a = 7, we have to plug 7 into a each time until we find a satisfied equation.
A:
- [tex]4(7)-4(14-7)=24[/tex]
- [tex]28-4(7)=24[/tex]
- [tex]28-28=24[/tex]
- [tex]0\neq 24[/tex]
B:
- [tex]7+2(7-3)=15[/tex]
- [tex]7+2(4)=15[/tex]
- [tex]7+8=15[/tex]
- [tex]15=15[/tex]
Therefore, B is the correct answer.
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