X=3 because you subtract the three on both sides to get x alone. So you get: 7x=21 then you divide seven by 21 and get x=3
245 x 0.45 = 110.25
110.25 is your answer
hope this helps
Answer:
x= 5 , for c to be same on each eqn
45% of what number is 27
0.45x = 27
x = 27 / 0.45
x = 60 <== 45% of 60 = 27