Question

Determine o valor das equaçoes abaixo
A) x-15=-9
B) -10+4-2t=-4t-8
C) 2.(x-2)+5.(2-x)+6.(x+1)=0
D )x+4.(x-1)=9-2.(x+3)

Answer 1

Resposta:

A) x-15= -9

x= -9+15

x= 6

B) -10+4-2t= -4t-8

-6-2t= -4t-8

-6-2t+4t= -8+6

2t= -2

t= -1

C) 2.(x-2)+5.(2-x)+6.(x+1)=0

2x-4+10-5x+6x+6=0

3x+12=0

3x= -12

X= -4

D) x+4.(x-1)= 9-2.(x+3)

x+4x-4= 9-2x-6

5x-4= 3-2x

5x+2x= 3+4

7x= 7

x= 1

Answer 2

Determine o valor das equaçoes abaixo
A) x-15=-9
X = - 9+15
X = 6
________________

B) -10+4-2t=-4t-8
- 6 - 2t = - 4t - 8
4t - 2t = - 8 + 6
2t = - 2
t = -2/2
t = - 1
_________
C) 2.(x-2)+5.(2-x)+6.(x+1)=0
2x-4+10-5x+6x+6= 0
2x+6+x+6= 0
3x+12=0
3x = - 12
x = -12/3
x = - 4

_________________

D )x+4.(x-1)=9-2.(x+3)
x+4x-4= 9 - 2x - 6
5x - 4 = 3 - 2x
5x + 2x = 3+4
7x = 7
X = 7/7
x = 1