Question

the sum of two numbers is 16 and their difference is 4

Answer 1

Answer:

10 and 6.

Step-by-step explanation:

10+6=16

and

10-6=4.

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Answer 2

Answer:

X = 10.

y = 6.

given: let the 2 numbers be X and y.

X + y = 16.----(1)

X - y = 4.-----(2)

solution: equation I

X + y = 16

X = 16 - y.

putting the value of X in equation 2.

X - y = 4.

16 - y - y = 4.

16 - 2y = 4.

-2y = 4 - 16.

-2y = - 12.

y = -12/-2 = 6.

•

now put the value of y in equation 2.

X - y = 4.

X - 6 = 4.

X = 4 + 6

X = 10.