Question

Find the value of x in x + y = 9 and x - y = 3.

Answer 1

x=6

Explanation:

6+3=9

6-3=3. algebra

Answer 2

x=6

Explanation:

x + y = 9

x - y = 3.

We can use elimination to find the value of x

Add the two equations together

x + y = 9

x - y = 3

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2x+0y = 12

2x = 12

Divide by 2

2x/2 = 12/2

x = 6