The Sum Of Two Numbers Is 70 And Their Difference Is 8
The problem given says that 2 unknown numbers are given, whose sum is equal to 70 and the difference is 8. Let's find the two numbers :When we add the two numbers :
X + Y = 70
The difference of two numbers :
X - Y = 8
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 70 X - Y = 8 2X = 78 |
Let's divide 78 to 2 for the first number "X" .
X/2 = 39
First number is 39
X + Y = 70
So ;
39 + Y = 70
Y = 70 - 39
Y = 31
Second number is 31
Question & Answer
The Sum Of Two Numbers Is 70 And Their Difference Is 8 : 39 And 31