Question

Resolva as equações do 1° grau com uma incógnita. a) 4x + 1 = 25 b) 6x - 7 = 11 e) 7x + 8 = 3x + 24 h) 11x-17 = 8x + 13 c) 6x-5-4x = 3 f) 9x + 22 = 7x i) 4x-7 =- 2x + 5 d) 3x - 12 = 18 g) 9x-20 = 30 - x j) 5x + 7 = 4x + 10
por favor eu preciso urgente dessa resposta!!!​

Answer 1

Resposta:

a)6 b)3 e)4 h)10 c)4 f)11 i)2 d)10 g)5 j)3

Explicação passo a passo:

a)4x+1=25

4x=25-1

4x=24

x=24/4=6

b)6x-7=11

6x=11+7

6x=18

x=18/6=3

e)7x+8=3x+24

7x-3x=24-8

4x=16

x=16/4=4

h)11x-17=8x+13

11x-8x=13+17

3x=30

x=30/3=10

c)6x-5-4x=3

6x-4x=3+5

2x=8

x=8/2=4

f)9x+22=7x

9x-7x=22

2x=22

x=22/2=11

i)4x-7=-2x+5

4x+2x=5+7

6x=12

x=12/6=2

d)3x-12=18

3x=18+12

3x=30

x=30/3=10

g)9x-20=30-x

9x+x=30+20

10x=50

x=50/10=5

j)5x+7=4x+10

5x-4x=10-7

x=3

Answer 2

a) 4X + 1 = 25
4X= 25 - 1
4X= 24
X= 6

b) 6X -7 = 11
6X = 11 + 7
6X = 18
X= 3

c) 6X -5 -4X = 3
6X -4X = 3 + 5
2X= 8
X= 4

d) 3X -12 = 18
3X= 18 + 12
3X= 30
X= 10

e) 7X +8 = 3X + 24
7X - 3X = 24 - 8
4X = 16
X= 4

f) 9X + 22 = 7X
9X -7X = -22
2X = -22
X= -11

g) 9X - 20 = 30 -X
9X + X = 30 + 20
10X= 50
X= 5

h) 11X -17 = 8X + 13
11X - 8X = 13 + 17
3X = 30
X= 10

i) 4X -7 = -2X +5
4X +2X = 5 + 7
6X= 12
X= 2

j) 5X +7 = 4X +10
5X -4X = 10 - 7
X= 3