Answers

(1)180-102=78. ⑵ 180-45+65=180-110
78-46=32. =70
  102+32=134 180-70=110 X=110
  180-134=46. 70+70=140
  46+78=124. 180-140=40 y=40
  180-124=56
  X=46 y=56 あってます?

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