Answer:
457
Explanation:
57;;/*_&445
5.3+3.5=8.8
x+y=8.8
x-y=1.8
add both equations togeather which cancel out y because there is a +y and a -y
2x=8.8+1.8
2x=10.6
2 2
x=5.3
8.8-5.3=3.5
5.3-3.5=1.8
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