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chubhunter [2.5K]
3 years ago
15

Seven decreased by three times a number is forty,please help

Mathematics
2 answers:
GREYUIT [131]3 years ago
5 0
7 - 3 = 4

4 x .... = 40

4 x 10 = 40
Nonamiya [84]3 years ago
4 0
Hello, 

x= the number
3x= three times the number

seven decreased by three times a number is forty, then:

7-3x=40
-3x=33
x=-11

Answer: the number is -11
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