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شائع Word Problems >

Twice the difference of a number and 9 is 7.

الحلّ

Tw i ce t h e d i ff ere n ce o f a n u mb er an d 9 i s 7.

الحلّ

The number : 12 \frac{1}{2}

خطوات الحلّ

Represent the number with

x

A.T.Q.:

2 (x - 9) = 7

2 (x - 9) = 7, x

حلّ لـ:

x = \frac{25}{2}

حوّل من كسر تخيّليّ لعدد مختلط:

\frac{25}{2} = 12 \frac{1}{2}

The number : 12 \frac{1}{2}

أمثلة شائعة

two added to twice a number gives-14 Manny and Bella deposit 700.00 into a savings account which earns 15% interest compounded annually. They want to use the money in the account to go on a trip in 3 years. How much will they be able to spend?A person invests 5000 dollars in a bank. The bank pays 5% interest compounded monthly. To the nearest tenth of a year, how long must the person leave the money in the bank until it reaches 10500 dollars?Find the amount to which 800 will grow under each of these conditions:8% compounded annually for 10 years. Do not round intermediate calculations. Round your answer to the nearest cent.The product of two consecutive positive numbers is 156 . Find the numbers.