Question

me ajudem por favorrrrrrrr​

Answer 1

Resposta:

Multiplica cruzado

$a)\\ {x\over2}=18\\ \\ x=36$

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$b)\\ {x\over3}=5\\ x=15$

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$e)\\ {x\over6}=11\\ x=66$

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$f)\\ {x\over7}=9\\ x=63$

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$i)\\ {x\over2}=1\\ x=2$

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$j)\\ {x\over6}=7\\ x=42$

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$m)\\ {2x+5\over3}=3\\ \\ 2x+5=9\\ 2x=9-5\\ 2x=4\\ x=4:2\\ x=2$

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$n)\\ {3x+4\over5}=2\\ \\ 3x+4=10\\ 3x=10-4\\ 3x=6\\ x=6:3\\ x=2$

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$q)\\ {5x-4\over6}=6\\ \\ 5x-4=36\\ 5x=36+4\\ 5x=40\\ x=40:5\\ x=8$

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$r)\\ {x+18\over5}=5\\ \\ x+18=25\\ x=25-18\\ x=7$

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$u)\\ {2x+14\over10}=3\\ \\ 2x+14=30\\ 2x=30-14\\ 2x=16\\ x=16:2\\ x=8$

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$v)\\ {3x-3\over8}=3\\ \\ 3x-3=24\\ 3x=24+3\\ 3x=27\\ x=27:3\\ x=9$