Answer:
a = -25
Explanation:
4a+6+16=-9(2+12a) -10(1-11a)
Remove the parenthesis and add like terms like 6 and 16
4a+22=-18-108a-10+110a
Add the like terms again which are -18 and -10 and 108 and 110
4a+22=-28-108a+110a
now we move all our variables on one side and numbers on the other using inverse
4a-2a+22=-28
4a and -2a are like terms so we combine again
2a=-28-22
2a=-50
We divide -50 over 2a
a=-25