What is the substition for 2g=43-4h and 2g=30-2h

Answer 1

Since 2g equals two different things, they must equal each other.

43 - 4h = 30 - 2h

2h = 13

h = 13/2 = 6 1/2

2g = 43 - 4(13/2)

2g = 43 - 26

2g = 17

g = 17/2 = 8 1/2