Question

Acha a raiz de cada equação
A)-3.(2 - 4x)+ 6 = 2x - 5. (2 + x)


B)25 + x = 43


C)16 - x= -8 - 4x

D)2x - 2 = 18 - 6x

Answer 1

A) -3(2-4X)+6=2X-5(2+X)
-6+12X+6=2X-10-5X
12X-2X+5X=-10
10X+5X=-10
15X+-10
X=-10/15
X=-2/3


B)25+X=43
X=43-25
X=18


C)16-X=-8-4X
-X+4X=-8-16
3X=-24
X=-8


D)2X-2=18-6X
2X+6X=18+2
8X=20
X=20/8
X=5/2