Question

e)5(4×+10)=15×+55
f) 3(2c+5)=2(5c-4)​

Answer 1

Explicação passo-a-passo:

E) 5 ( 4x + 10 ) = 15 x + 55

$20x + 50 = 15x + 55\\20x - 15x = 55 - 50\\5x = 5\\x= \frac{5}{5} \\x= 1$

F) 3 ( 2c + 5 ) = 2 ( 5c - 4 )​

$6c + 15 = 10c - 8\\6c - 10c = -8 - 15\\- 4c = - 23 (- 1 )\\4c = 23\\c = \frac{23}{4}$

espero ter ajudadooh : )