Question

Resolva as equações de primeiro grau:
A)5X-22=10+ X
B)9-6X= -3X +15
C)4. (2X-3) = -2. (X-4)
D)3.(5-3X) +4= 2. (-5X -2)

Answer 1

Bom Dia !!!

a) 5x - 22 = 10 + x

a) 5x - x = 10 + 22

a) 4x = 32

a) x = 32 / 4

a) x = 8

b) 9 - 6x = - 3x + 15

b) - 6x + 3x = 15 - 9

b) - 3x = 6 . ( - 1 )

b) 3x = - 6

b) x = - 6 / 3

b) x = - 2

c) 4 . (2x - 3) = - 2.( x - 4)

c) 8x - 12 = - 2x + 8

c) 8x + 2x = 8 + 12

c) 10x = 20

c) x = 20 / 10

c) x = 2

d) 2 . (5 - 3x) + 4 = 2 . (- 5x - 2)

d) 10 - 6x + 4 = -10x - 4

d) - 6x + 10x = - 4 - 4 - 10

d) 4x = - 18

d) x = - 18 / 4

ou

d) x = - 4,5

Espero ter ajudado :-)

Att: LDC