Question

Resolva as seguintes equações:

a) 3 = 15

b) 2 = 14

c) 4 = −12

d) 7 = −21

e) 13 = 13

07) Determine x:

a) 6 = 2 + 16

b) 2 − 5 = + 1

c) 2 + 3 = + 4

d) 5 + 7 = 4 + 10

e) 4 − 10 = 2 + 2

f) 4 − 7 = 8 − 2

g) 2 + 1 = 4 − 7

h) 9 + 9 + 3 = 15

i) 16 − 1 = 12 + 3

j) 3 − 2 = 4 + 9

08) Resolva as equações:

a) 4 − 1 = 3( − 1)

b) 3( − 2) = 2 − 4

c) 2( − 1) = 3 + 4

d) 3( − 1) − 7 = 15

e) 7( − 4) = 2 − 3​

Answer 1

Resposta:

a)3=15

3-15=12

b)2=14

2-14=12

c)4=-12

4+12=16

d)7=-21

7+21=28

e)13=13

13-13=0

(07)

a)6=2+16

6-2-16=-12

b)2-5=+1

2-5-1=2

c)2+3=+4

2+3-4=1

d)5+7=4+10

5+7-4-10=-2

e)4-10=2+2=

4-10-2-2=2

f)4-7=8-2

4-7-8+2=-3

g)2+1=4-7

2+1-4+7=8

h)9+9+3=15

9+9+3-15=6

i)16-1=12+3

16-1-12-3=0

j)3-2=4+9

3-2-4-9=-12

(8)

a)4-1=3(-1)

4-1-3.(-1)=6

b)3(-2)=2-4

3.(-2)-2+4=-4

c)2(-1)=3+4

2(-1)-3-4=-9

d)3(-1)-7=15

3.(-1)-7-15=-25

e)7(-4)=2-3

7.(-4)-2+3=-27

Explicação:

fé no pai