Question

resolva as questões de 1° grau
a) x-20=25
b)7×-4=10
​

Answer 1

$a) x = 45\\b) x = 2$

$a) x-20=25\\ x = 25 + 20\\ x = 45$

$b)7x-4=10\\\\ 7x = 10 + 4\\\\ 7x = 14\\\\ x = 14 / 7\\\\ x = 2$

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