Question

if 50 is added to 7 times a number is equal to 40 subtracted from a tripal century,find the number.​

Answer 1

Step-by-step explanation:

Let the number be x

According to the question,

1) 50 is added to 7 times a number

=> 50+7x-----------Equation i in equation (1)

2) equals to

=> 50+7x = -------------Equation ii in equation (1)

3) 40 subtracted from triple century

---> Triple century = 300

=> 300-40 -------------Equation (2)

Adding both equations,

=> 50+7x = 300-40

Hence, the following expression is 50+7x = 300-40

The value of x is asked in question.

50+7x = 300-40

50+7x = 260

7x = 260-50

7x = 210

x = 210/7 = 30.

Therefore, the number is 30.