Question

Resolva as equaçoes a seguir,sendo U=z a)2x+3=9 b)-3x+5=x+1 c)6x=-x+16 d)9x-9+3x=15 e)5x+4=3x-x+3 f)7x+8-3x=20-4x+1

Answer 1

A) 2x+3=9
2x=9-3
2x=6
X=6/2
X=3

B)-3x+5=x+1
-3x-x=1-5
-4x=-4
X=-4/-4
X=1

C) 6x=-x+16
6x+x=16
7x=16
X=16/7

D)9x-9+3x=15
9x+3x=15+9
12x=24
X=24/12
X=2

E)5x+4=3x-x+3
5x-3x+x=3-4
2x+x=-1
3x=-1
X=-1/3
X=-0,333...

F)7x+8-3x=20-4x+1
7x-3x+4x=20+1-8
4x+4x=21-8
8x=13
X=13/8
X=1,625


Espero ter ajudado :-) :-) !