Question

The different between two number is 5 and their sum is 43. Find the number

Answer 1

Here is your answer,

Let the two numbers be x and y.

X+y=137

X-y=43

By elimination method,

2x=180

X=90

Substitute the value of x ,

X+y=137

Y=137-90

=47

Answer 2

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Let x and y be the two numbers:

$\sf = x + y = 137 \\ \sf = x - y = 43$

Using elimination method:

$\sf = 2x = 180 \\ \sf = x = 90$

Substuting the value of x , we get:

$\sf = x + y = 137 \sf \\ \sf= y = 137 - 90 \sf \\ \sf= 47$