Question

Resolva as equacoes e obtenha a solucão de cada uma, sabendo que U=Q. E) 10X=20+9X F)2m+6=m G)2X+1=15 H) 5-x-20=5x-10-7x i)x+6=2-3x

Answer 1

E) 10x=20+9x
10x-9x=20
x=20

F)2m +6=m
6= m-2m
-1m= 6
m= -6

G) 2x+1=15
2x= 15-1
2x=14
x=14/2
x=7

H) 5-x-20=5x-10-7x
5+10-20= 5x- 7x -5x
-7x= -5
x= -5/7

I) x+6=2-3x
x+3x= 2-6
4x= -4
x= -4/4
x= -1

Answer 2

OI

e)

10x = 20 + 9x

10x - 9x = 20

x = 20

f)

2m + 6 = m

2m - m = - 6

m = - 6

g)

2x + 1 = 15

2x = 15 - 1

2x = 14

x = 14/2

x = 7

h)

5 - x - 20 = 5x - 10 - 7x

-x -5x + 7x = - 10 + 20 - 5

x = 5

i)

x + 6 = 2 - 3x

x + 3x = 2 - 6

4x = - 4

x = - 4/4

x = 1

Espero ter ajudado