Question

Resolva as equações abaixo a) 3x+10=16 b)6x-7=11 c)3x-3=18 d)6x-8=5x+2 e)x+20=15 f)6x-6=10+2x g)2x-12=20 g7x-9=4x-6

Answer 1

Resposta:

a) 2

b)3

c) 7

d) 10

e) -5

f) 4

g) 16

h) 1

Explicação passo-a-passo:

a) 3x+10=16 → 3x=16-10 → x=6/3 → x=2

b) 6x-7=11 → 6x=11+7 → x=18/6 → x=3

c) 3x-3=18 → 3x=18+3 → x=21/3 → x=7

d) 6x-8=5x+2 → 6x-5x=2+8 → x=10

e) x+20=15 → x=15-20 x=-5

f) 6x-6=10+2x → 6x-2x=10+6 → x=16/4 → x=4

g) 2x-12=20 → 2x=20+12 → x=32/2 → x=16

h) 7x-9=4x-6 → 7x-4x=9-6 → x=3/3 → x=1

Answer 2

Resposta:

a) 3x+10=16

3x=16-10

3x=6

6/3x=2

x=2

b)6x-7=11

6x=11+7

6x=18

18/6x= 3

x=3

c)3x-3=18

3x=18+3

3x=21

21/3x=7

x=7

d)6x-8=5x+2

6x-5x=+2+8

x=10

e)x+20=15

x=15-20

×= -5

f)6x-6=10+2x

6x-2x=10+6

4x=16

16/4x=4

x=4

g) 2x-12=20

2x=20+12

2x=32

32/2x=16

x=16

h)7x-9=4x-6

7x-4x=-6+9

3×=3

3/3x=1

x=1