Sum of two number s is 215 and their difference is 53 .find the numbers
a = first number
b = second number
Sum of two number s is 215 mean:
a + b = 215
Their difference is 53 mean:
a - b = 53
Now you must solve system of two equation with two unknown::
a + b = 215
a - b = 53
Try that.
The solutions are:
a = 134 , b = 81
Prof:
a + b = 134 + 81 = 215
a - b = 134 - 81 = 53
To find the two numbers, let's assume the first number is x and the second number is y. We are given two pieces of information:
1. The sum of the two numbers is 215: x + y = 215
2. The difference between the two numbers is 53: x - y = 53
To solve this system of equations, we can use either substitution or elimination method. Let's use the elimination method:
Adding the two equations together eliminates the y term:
(x + y) + (x - y) = 215 + 53
2x = 268
Now, we can solve for x by dividing both sides of the equation by 2:
2x / 2 = 268 / 2
x = 134
Substitute the value of x back into one of the original equations (let's use the first equation) to find y:
134 + y = 215
y = 215 - 134
y = 81
Therefore, the two numbers are 134 and 81.
I need help what is this question 7+81+x=215
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