Question

(1-) Resolva as equações a seguir:

A-) 3+x= 0
B-) 12-7+4x= 25
C-) 5x-3x= 30
D-) 4x+10= 45-3x​

Answer 1

oie !!

$a)\\3+x=0\\x=-3\\\\b)\\12-7+4x=25\\4x=25+7-12\\4x=20\\x=20/4\\x=5\\\\c)\\5x-3x=30\\2x=30\\x=30/2\\x=10\\\\d)\\4x+10=45-3x\\4x+3x=45-10\\7x=35\\x=35/7\\x=5$

espero que ajude