Question

Resolva as equaçõesA)5+3y=-1+4yB)-15-11x+-9-3xC)1-2y=7y+8D)1045-x=729-3xE)x+1+2x+=1-3xF)7-x=x+1+2x

Answer 1

a)5+3y= -1+4y
3y-4y=-5-1
-y=-6 (-1)
y=6

b)-15-11x=-9 -3x
-11x+3x= +15-9
-8x= 6
x= -6 /8

c)1-2y=7y+8
-2y-7y=-1+8
-9y= +7
y= -7/9

d)1045-x=729 -3x
-x+3x = -1045+729
2x=316
x=316÷2
x=158

e)x+1+2x =1 -3x
x+3x+2x=-1+1
6x=0
x=0/6
x=0

f)7-x=x+1+2x
-x-x-2x=-7+1
-4x=-6
x= 6/4
x=1,5

Answer 2

Oi

a) 5 + 3y = - 1 + 4y

3y - 4y = - 1 - 5

- x = - 6 ( . - 1)

x = 6

b) - 15 - 11x = - 9 - 3x

- 11x + 3x = - 9 +15

- 8x = 6 ( . - 1)

8x = - 6

x =  - 6 /8 ÷ 2

x = - 3/4

c) 1 - 2y = 7y + 8

- 2y - 7y = 8 - 1

- 9y = 7 ( . - 1)

9y = - 7

y = - 7/9

d) 1045 - x = 729 - 3x

- x + 3x = 729 - 1045

2x = - 316

x = - 316/2

x = - 158

e) x + 1 + 2x = 1 - 3x

x + 2x + 3x = 1 - 1

6x = 0

x = 0/6

x = 0

f) 7 - x = x + 1 + 2x

- x -x - 2x = 1 - 7

- 4x = - 6 ( . - 1)

4x = 6

x = 6/4 ÷ 2

x = 3/2

Espero ter ajudado