The sum of three numbers is 72
The second number is 7 times the first.
The third number is 18 less than the second
What is the first number?

Let the first number be x, second number be 7x and the third number be      7x-18. Then,

Sum of the numbers=72

or, x+(7x) +(7x-18)=72

or, 15x=90

or, x=6

So, the first number is 6.

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .

b. x + 1

step-by-step explanation:

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