Question

4- Resolva as equações: a) 2n=5 b) 2n=6 c) 2n=7 d) 5y-1=29 e) 4x-4=40 f) 8+3h=29 g) n-7=7
h) 5x=35 i) R+8=8

Answer 1

Resposta:

a) 2n = 5

n = 5/2

n = 2,5

b) 2n = 6

n = 6/2

n = 3

c) 2n = 7

n = 7/2

n = 3,5

d) 5y - 1 = 29

5y = 29 + 1

5y = 30

y = 30/5

y = 6

e) 4x - 4 = 40

4x = 40 + 4

4x = 44

x = 44/4

x = 11

f) 8 + 3h = 29

3h = 29 - 8

3h = 21

h = 21/3

h = 7

g) n - 7 = 7

n = 7 + 7

n = 14

h) r + 8 = 8

r = 8 - 8

r = 0