4) The teacher said, "I have thought of anumber. If you add 7 to 3 tim

1.	4) The teacher said, "I have thought of anumber. If you add 7 to 3 times the number,you get 31. What number have I thoughtof?" Can you answer the teacher'sCortion2
Answer» I tell the teacher the answer is 21 the answer is 10 because 7×3=21+10=31 Let the number be x 7+3x = 313x = 31-73x = 24X= 8 Ans. let the number be x7+3x=313x=31-73x=8 ans. let the no. be x; 7 + 3x = 31 3x = 31 - 7 3x = 24 x= = 24/3 = 8 3x+7 =313x = 31-73x =24x =24÷3x =8 3x +7 =313x=31-73x=24x=24÷3x=8 Let the number be x7 + 3x = 31Therefore, 3x = 31 - 7Therefore, 3x = 24Therefore, x = 24 ÷ 3Therefore, x = 8

4) The teacher said, "I have thought of anumber. If you add 7 to 3 times the number,you get 31. What number have I thoughtof?" Can you answer the teacher'sCortion2

Answer»

I tell the teacher the answer is 21

the answer is 10 because 7×3=21+10=31

Let the number be x 7+3x = 313x = 31-73x = 24X= 8 Ans.

let the number be x7+3x=313x=31-73x=8 ans.

let the no. be x; 7 + 3x = 31 3x = 31 - 7 3x = 24 x= = 24/3 = 8

3x+7 =313x = 31-73x =24x =24÷3x =8

3x +7 =313x=31-73x=24x=24÷3x=8

Let the number be x7 + 3x = 31Therefore, 3x = 31 - 7Therefore, 3x = 24Therefore, x = 24 ÷ 3Therefore, x = 8