Question

Resuelve las siguientes ecuaciones y luego verifica ​

Answer 1

Respuesta:

A)

$2x = 20 \\ x = 20 \div 2 \\ x = 10$

B)

$5a + 1 = 21 \\ 5a = 21 - 1 \\ 5a = 20 \\ a = 20 \div 5 \\ a = 4$

C)

$y - 7 = 3y - 37 \\ 37 - 7 = 3y - y \\ 2y = 30 \\ y = 30 \div 2 \\ y = 15$

D)

$5(z - 3) = 5 + z \\ 5z - 15 = 5 + z \\ 5z - z = 5 + 15 \\ 4z = 20 \\ z = 20 \div 4 \\ z = 5$

E)

$m - 2(m - 2) - 3(m + 4) = - 32 \\ 2m + 4 - 3m - 12 = - 32 \\32 + 4 - 12 = 3m - 2m \\ 24 = m$