Question

El valor de a, b en las ecuaciones 3(a+2)=2b, 2(b+5)=7a es?​

Answer 1

Explicación paso a paso:

3(a+2)=2b.

3(a+2) /3= 2b/3

Simplificar

a+2=2b/3

a+2-2=2b/3-2

a=2b/3-2

2(b+5=7a

7a=2(b+5)

7a /7=2(b+5)/7

Simplificar

a=2(b+5)/7

2b/3-2+2(b+5)/7

2. b+5/7:2(b+5)/7=2b/3-2+2(b+5)/7

:20b+30/21=20b+30/21-2