Question

resolva
a)13x +26=390

b)7y+21=63

c)22x+66=242

com conta

Answer 1

Resposta:

a) 28

b) 6

c) 8

Explicação passo-a-passo:

a)

13x +26=390

13x=390-26

13x=364

x=364/13

x=28

b)

7y+21=63

7y=63-21

7y=42

y=42/7

y=6

c)

22x+66=242

22x=242-66

22x=176

x=176/22

x=8

Abraço, Jason.