Question

numeros desconhecidos so preciso qe respondam essas B)x+6=15-4 F)7x=490 I)12x=39-15

Answer 1

B)
x + 6 = 15 - 4
x + 6 = 11
x = 11 - 6
x = 5

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F)
7x=490
x = 490/7
x = 70

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I)
12x = 39 - 15
12x = 24
x = 24/12
x = 2

Answer 2

x+6=15-4                

x=15-4-6

x = 15 - 10

x = 5


7x=490

x = 490/7

x = 70


12x=39-15

12x = 24 

x = 24/12 

x= 2