Subtract 12 from both sides
0.75x = 21 - 12
Simplify 21 - 12 to 9
0.75x = 9
Divide both sides by 0.75
x = 9/0.75
Simplify 9/0.75 to 12
x = 12
Answer:
x=12
Step-by-step explanation:
0.75x+12=21
Subtract 12 from each side
0.75x+12-12=21-12
.75x = 9
Divide each side by .75
.75x/.75 = 9/.75
