Question

1) Determine os valores das equações abaixo ( os valores de "X"):
a) X-1 = 6
b) X +2 = 6
c) X – 4 + 5 = 20
d) +2 X = 6
e) X + X = 30​

Answer 1

$a)x-1 = 6\\x=6+1\\x=7\\\\b) x+2 = 6\\x=6-2\\x=4\\\\c) x-4+ 5 = 20\\x=20+4-5\\x=24-5\\x=19\\\\d)+2 x = 6\\x=\frac{6}{2} \\x=3\\\\e)x+x= 30\\2x=30\\x=\frac{30}{2} \\x=15$

Bons estudos!!