Answer:
x=-1 29/180 ~ -1.161
Step-by-step explanation:
first 2x+4=5x+7
2x+4-5x=7
-3x+4=7
-3x=7-4
-3x=3
x=3/-3
x=-1
then
-1=20x+8
20x+8=-1
20x=-1-8
20x=-9
x=-9/20
and after
-9/20=9x+10
-9x-9/20=10
-9x=10+9/20
-9x=209/20
x=-209/180
