Question

resolva as equações.
a)6x=2x+16
b)4x-10=2x+2
c)2x+1=4x-7
d)3x-2=4x+9
e)5x+4=3x-2x+4
f)x+x-4=17-2x+1

Answer 1

$a)6x=2x+16\to 6x-2x=16\to 4x=16\to x= \frac{16}{4} \to x=4\\\\ \\b)4x-10=2x+2 \to 4x-2x=2+10\to 2x=12\to x= \frac{12}{2} \to \\x=6 \\\\\\c)2x+1=4x-7\to 2x-4x=-7-1\to -2x=-8\to x= \frac{-8}{-2}\to \\ x=4\\\\\\ d)3x-2=4x+9\to 3x-4x=9+2\to -x=11(-1)\to x=-11 \\\\\\e)5x+4=3x-2x+4\to 5x-3x+2x=4-4\to 4x=0\to \\ x= \frac{0}{4} \to x=0\\\\\\f)x+x-4=17-2x+1\to x+x+2x=17+1+4\to 4x=22\to \\x= \frac{22}{4} \to x= \frac{11}{2} \\ou\\ x=5,5$