Question

5( 2x - 8 ) + 10 = - ( - 3x + 9 ) - 50



b) 7x + 45 - 2x = 3( 2x - 10 ) + 20



c) ( 4x - 52 ) - ( x + 12 ) = 7x - ( x + 9 ) - 2 ( x + 1 )



d) 4( x - 1 ) = 10 x - 12 + ( x - 9 ) - x + 7



e ) ( 5x - 15 ) - ( 3x + 20 ) = 3 ( x + 12 ) + 40



f) 8x + 9 + 3x = - 11x + 14 - 25



g) 3 ( x + 4 ) - ( 4x + 8 ) + ( 5x - 6 ) = 100



h) 8x = 5 ( x - 14 ) + 2 ( x - 50 )


i) 9x + 12 = 100 - ( 2x + 90 )



j) 4 ( 2x + 9 - 5x - 5 ) = 88

Answer 1

Resposta:

a)9x-2= 4x+18

9x-4x=18+2

5x=20

x= 20/5

x=4

b) 2x-10+7x+10=180

9x=180

x=180/9

x=20

c) 7y-10= y+50

7y-y=50+10

6y= 60

y= 60/6

y=10

d)4x-18+3x=10

3x+4x=10+18

7x=28

x=28/7

x=4

e) 2x+5+x+7=18

2x+x= 18-5-7

3x= 6

x=6/3

x=2

f)5x-91=4x-77

5x-4x=-77+91

x= 14

g)7x+1=5x-7

7x-5x=-7-1

2x= -8

x=-8/2

x= -4

h) 4x+5=x+20

4x-x= 20-5

3x= 15

x=15/3

x=5