1\2(4x+20)+4=24
distribute & multiply 1/2 by parentheses
(1/2 * 4x) + (1/2 * 20) + 4= 24
2x + 10 + 4= 24
2x + 14= 24
subtract 14 from both sides
2x= 10
divide both sides by 2
x= 5
CHECK
1\2(4x+20)+4=24
1/2((4)(5)+20) + 4= 24
1/2(20 + 20) + 4= 24
1/2(40) + 4= 24
20 + 4= 24
24= 24