Twice the sum of a number and 4 is equal to 9

2 answers:

7 0

It could be 2.5+2.5=5 and then add that to 4 and that equals 9

6 0

2x(4+n)=9
8 +2n = 9
2n = 9-8
2n = 1
n = 0.5

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