Question

resolva
a)5(n-3)=7
b)3(n-4)=n-1
c)2(n-7)+10=18​

Answer 1

Resposta:

a) 22/5

b)11/2

c) 11

Explicação passo-a-passo:

a)5(n-3)=7

5n-15=7

5n =7+15

5n=22

n = 22/5

b)3(n-4)=n-1

3n -12=n-1

3n -n=-1+12

2n = 11

n= 11/2

c)2(n-7)+10=18

2n-14+10=18

2n = 18+4

2n=22

n =22/2

n =11

Answer 2

Resposta:

a)5(n-3) = 7

5n - 15 = 7

5n = 7 + 15

5n = 22

n= 22/5

b)3(n-4) = n - 1

3n - 12 = n -1

3n- n = -1 + 12

2n = 11

n = 11/2

c) 2(n-7) + 10 = 18

2n -14 + 10 =18

2n = 18 + 14 -10

2n = 32 - 10

2n = 22

n= 22/2

n = 11