mathematical equation for x:?

👨🏻‍🏫 學術台數學

[匿名]

2016-02-21 6:29 pm

54-(5x+12)5(x+4)+x
a 3
b 2
c 22
d 4.18

回答 (3)

DWRead

2016-02-21 6:31 pm

There is no "=" sign, so it is not an equation.
Are you trying to simplify the expression?
Find the roots of the expression?

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sepia

2016-02-21 7:24 pm

54 - (5x + 12) = 5(x + 4) + x
42 - 5x = 6x + 20
11x = 22
x = 2
Solution:
x = 2
Answer choice:
b 2

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llaffer

2016-02-21 6:30 pm

I think there is something missing ....

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