Because u r adding irrational to rational its like if u add a whole number to a negative number u get deeper into negatives in this case irrational is the negative and rational is the whole<span />
Answer is in a photo. I couldn't attach it here, but I uploaded it to a file hosting. link below! Good Luck!

I just need some points so I can ask a question but I hope you find your answer!
The answer to the expression is -24x+28x
87.4
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18 | 15740
144
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134
126
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80
72
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8
this is gonna just keep repeating....so ur answer is 87.444.....or 87 4/9