Question

Resolva as equações do primeiro grau
(A) x-13=27 ?
(B) x+25=10?
(C) x+101=300?
(D) x-279=237?
(E) x-86= -108?
(F) 9x= - 72?
(G)35x= - 105?
(H)7x-=1?
(I)6x - 10=2x+1

Answer 1

Resposta:

A: X = 40

B: X=-15

C: X=199

D: X=516

E: X=-22

F: X=-8

G: X=-3

H: X=1/7

I: X=11/4

Explicação passo a passo:

A :

X-13 = 27

X= 27 + 13

X=40

B:

X+25=10

X=10-25

X=-15

C:

X+101=300

X=300-101

X=199

D:

X-279=237

X=237+279

X=516

E:

X-86=-108

X=-108+86

X=-22

F:

9X=-72

X=-72/9

X=-8

G:

35X= -105

X=-105/35

X=-3

H:

7X=1

X=1/7

G:

6X-10=2X+1

6X-2X=1+10

4X=11

X=11/4

Answer 2

Resposta:

$a) \: x - 13 = 27 \\ x = 27 + 13 \\ x = 40$

$b) \: x + 25 = 10 \\ x = 10 - 25 \\ x = - 15$

$c) \: x + 101 = 300 \\ x = 300 - 101 \\ x = 199$

$d) \: x - 279 = 237 \\ x = 237 + 279 \\ x = 516$

$e) \: x - 86 = - 108 \\ x = - 108 + 86 \\ x = - 22$

$f) \: 9x = - 72 \\ x = \frac{ - 72}{9} \\ x = - 8$

$g) \: 35x = - 105 \\ x = \frac{ - 105}{35} \\ x = - 3$

$h) \: 7x = 1 \\ x = \frac{1}{7} \\ x = 0.14$

$i) \: 6x - 10 = 2x + 1 \\ 6x - 2x = 1 + 10 \\ 4x = 11 \\ x = \frac{11}{4} \\ x = 2.75$

Espero ter ajudado ;)