Question

1. Resolva as equações:


a) x + 15 = 11

b) 9x =266


c) X/13=-2

d) X-57 = 1​

Answer 1

Resposta e explicação passo a passo:

$a)\ x+15=11\\\\x=11-15\\\\x=-4\\\\\\b)\ 9x=266\\\\x=\frac{266}{9}\\\\x=29,66\\\\\\c)\ \frac{x}{13}=-2\\\\13(\frac{x}{13})=13(-2)\\\\x=-26\\\\\\d)\ x-57=1\\\\x=1+57\\\\x=58$