Question

A)4+5x=29
B)6x+2=3x-7
C)5x-9=2x+18
D)12-3x=9-7x
E)3(4x-1)=8x+25
F)1+5x=3.(4x+5)
G)6+(x - 3)= 4(3x-2)
H)6x+2(x - 5)=54
Me ajude por favor preciso pra amanhã de manhã

Answer 1

Resposta:

A)x=5

B)x=3

C)x=9

D)x=-0,6

E)x=7

F)x=-2

G)x=-1

H)x=8

QUEIS AS CONTAS ?????

Answer 2

A)4+5x=29

$5x = 29 - 4 \\ 5x = 25 \\ x = \frac{25}{5} \\ x = 5$

B)6x+2=3x-7

$6x - 3x = - 2 - 7 \\ 3x = - 9 \\ x = - \frac{9}{3} \\ x = - 3$

C)5x-9=2x+18

$5x - 2x = 18 + 9 \\ 3x = 27 \\ x = \frac{27}{3} \\ x = 9$

D)12-3x=9-7x

$- 3x + 7x = 9 - 12 \\ 4x = - 3 \\x = - \frac{3}{4}$

E)3(4x-1)=8x+25

$12x - 3 = 8x + 25 \\ 12x - 8x = 25 + 3 \\ 4x = 28 \\ x = \frac{28}{4} \\ x = 7$

F)1+5x=3.(4x+5)

$1 + 5x = 12x + 15 \\ 5x - 12x = 15 - 1 \\ - 7x = 14 \times ( - 1) \\ 7x = - 14 \\ x = - \frac{14}{7}$

$x = - 2$

G)6+(x - 3)= 4(3x-2)

$6 + x - 3 = 12x - 8 \\ x - 12x = - 8 - 6 + 3 \\ - 11x = - 11 \times ( - 1) \\ 11x = 11 \\ x = \frac{11}{11}$

$x = 1$

H)6x+2(x - 5)=54

$6x + 2x - 10 = 54 \\ 8x = 54 + 10 \\ 8x = 64 \\ x = \frac{64}{8} \\ x = 8$

Espero ter ajudado

Bons estudos!