Question

gente me ajudem plis​

Answer 1

Resposta:

$a) x+5=8\\\\x-3=0\\\\1 \ . \ x+(-3)=0\\\\x=\frac{-(-3)}{1} \\\\x=3$

$b)a-4=3\\\\a-7=0\\\\1 \ . \ a+(-7)=0\\\\a=\frac{-(-7)}{1} \\\\a=7$

$c)x+6=5\\\\x+1=0\\\\1 \ . \ x+1=0\\\\x=\frac{-(1)}{1} \\\\x=-1$

$d)b-7=-7\\\\b=0\\\\1 \ . \ b=0\\\\b=0$

$e)x+9=-1\\\\x+10=0\\\\1 \ . \ x+(10)=0\\\\x=\frac{-(10)}{1} \\\\x=-10$

$f) b+28=11\\\\b+17=0\\\\1 \ . \ b+(17)=0\\\\b=\frac{-(17)}{1} \\\\b=-17$

$espero \ ter \ ajudado!$