1 и 6
2 и 4
3 и 5 ставь спасибо!
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8 <span>4/9</span>−3 <span>7/9</span>=<span>8 · 9 + 4/9</span>−<span>3 · 9 + 7/9</span>=<span>76/9</span>−<span>34/9</span>=<span>76 − 34/9</span>=<span>42/9</span>=<span>14 · 3/3 · 3</span>=<span>14/3</span>=4 <span>2/<span>3</span></span>
-18+6a-12a-12+54-6a=24-12a