Question

2) Resolva as equações: a)x+ 5 = 8 e) x + 9 = -1 i)10 = x + 8 3) Resolva as equações: a)3x = 15 e)13x = 13 b)x=4 = 3 f) x + 28 = 11 c) x + 6 = 5 d) x - 7=-7 g)x - 109 = 5 h) x-39 = -79 j)15 = x + 20 k)4 = x - 10 1)7 = x+8 b)2x = 14 f)9x = -9 c)4x = -12 g)25x = 0 d)7x = -21 h)35x = -105​

Answer 1

Resposta:

Cálculos abaixo

Explicação passo a passo:

a)x+ 5 = 8

x=8-5

x=3

e) x + 9 = -1

x=-9-1

x=-10

i)10 = x + 8

x=10-8

x=2

a)3x = 15

x=15/3

x=5

e)13x = 13

x=13/13

x=1

b)x=4 = 3

x=4-3

x=1

f) x + 28 = 11

x= 11-28

x= -17

c) x + 6 = 5

x=5-6

x=-1

d) x - 7=-7

x=-7+7

x=0

g)x - 109 = 5

x= 5 + 109

x=114

h) x-39 = -79

x=39 -79

x= -40

j)15 = x + 20

x= -10 +15

x= 5

k)4 = x - 10

x=4+10

x=14

1)7 = x+8

x=7-8

x=-1

b)2x = 14

x=14/2

x=7

f)9x = -9

x=-9/9

x=-1

c)4x = -12

x=-12/4

x=-3

g)25x = 0

25x/25=0/25

corta..

x=0

d)7x = -21

x= -21/7

x=-3

h)35x = -105​

x=-105/35

x= -3

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