Answer:
23) x= 
24) x= 
Step-by-step explanation:
20 mysteries. Add 20% and 30% to get 50%. Then rewrite 50% as 50/100. Next multiply 50/100 by 40 to get 2,000/100.The last thing to do is simplify to get 20 and subtract 20 from 40 to get 20 mysteries.
X=292.6
Step 1: distribute 3 through parentheses
3x-126=752
Step 2: move the constant to the right and change it sign
3x= 752+126
Step 3: add the numbers
3x= 878
Step 4: divide both sides by three
X= 878/3 or 292.6
