Atenção! Esta questão foi postada ha mais de 30 dias!
Exercício de questões com problemas (algébra 7 ano)EF
Exercício:
1)Ana tem quatorze anos e seu irmão tem oito.Há quantos anos seu irmão tinha um terço da idade da irmã?
2)A soma de um número com metade de seu sucessor é 38.Qual é o número?
3)Retirei R$ 270,00 em notas de vinte e cinquentas.Recebi 9 notas.Quantas de cada valor?
4)Retirei R$ 310,00 em notas de vinte e dez reais.Recebi 23 cédulas.Descubra quantas notas são de cada valor.
5)A quinta parte do sucessor de um número adicionada a sua metade é 17.Qual é o número?
Obs:GENTE EU PRECISO DO DESENVOLVIMENTO DA QUESTÃO COM EXPLICAÇÃO PASSO A PASSO DA RESOLUÇÃO,EU NÃO QUERO SÓ A RESPOSTA,DESENVOLVIMENTO PELO MODO COM LETRAS ALGÉBRICAS.PRECISO DE AJUDA!!!!!!!!
40
94
9
99
93
28
14
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