Answer:
48 is right!!
Step-by-step explanation:
the pattern is +10 +9 +8 +7 +6 +5 and so on
I believe the answer is 45
<em> x−y = 9 , x + y = 6</em>
<em>x + y = 4 , x − y = 2</em>
<em>x + 2 y = 4 , x − y = − 3 </em>
<em>try out these examples?</em>
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