Question

hallar la incognita de a-4 (2a-7)=3 (a+6)

Answer 1

a-8a+28=3a+18  28-18=3a+8a-a  10=10a  10:10=a  1=a

Answer 2

resolver.

a - 4( 2a - 7= = 3(a + 6)
a - 8a + 28 = 3a + 18
- 7a + 28 = 3a + 18
28 - 18 = 3a + 7a
10 = 10a
10/10 = a
1 = a

Respuesta.
a = 1