Question

5) Resolva as equações.
a) X + 5 = 11
b) Y - 4 = -6
c) 3X - 5 = x + 13
d) 2(X + 2) = 18
e)3(x - 2) + 6 = 2(X + 5) + 11​

Answer 1

Resposta:

$a) x + 5 = 11\\x=11-5\\x=6$

$b) y - 4 = -6\\y=-6+4\\-2$

$c) 3x - 5 = x + 13\\3x-x=13+5\\2x=18\\x=18/2\\x=9$

$d) 2(x + 2) = 18\\x+2=9\\x=9-2\\x=7$

$e)3(x - 2) + 6 = 2(x + 5) + 11\\3x-6+6=2x+10+11\\3x=2x+21\\3x-2x=21\\21x=1\\x=21/1\\x=21$