Question

The sum of two numbers is 145. Their difference is 45. What are the numbers?

Answer 1

N + N + 45 = 145
2N = 100
N = 50
N + 45 = 95

Answer 2

Let x and y be the two numbers where x is the larger number.


x+y = 145
x-y = 45



x+y = 145

y = 145-x

------------

x-y = 45

x-(145-x) = 45

x-145+x = 45

2x-145 = 45

2x = 45+145

2x = 190

x = 190/2

x = 95

-----------

y = 145-x

y = 145-95

y = 50


So the solutions are x = 95 and y = 50


So the two numbers are 95 and 50

Answer 3

nice explaining i like it i andurstand it now thanx

Answer 4

Solve the system of equations using the elimination method.

2x + 4y = 10

4x - y = 11

Answer 5

x + y = 145......(1)
x - y= 45.....(2)

x= 145 - y from (1)
x = 45 + y from (2)

145 - y = 45 + y
2y = 100
y= 50

x - 50 = 45
x = 95