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alangust8
@alangust8
July 2023
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determine o valor de X da equação do 1 grau
a) ×+12=37
b)35+×=21
c)×+45=30
d)3×+12=40+×
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Pluppys
Verified answer
a) 37 - 12 = x -> x = 25
b) 35 - 21 = x -> x = 14
c) 30 - 45 = x -> x = -15
d) Passa os números pra um lado da igualdade e as letras pro outro (invertendo os sinais)
3x + 12 = 40 + x -> 3x - x = 40 - 12 -> 2x = 28 -> x = 14
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Verified answer
a) 37 - 12 = x -> x = 25b) 35 - 21 = x -> x = 14
c) 30 - 45 = x -> x = -15
d) Passa os números pra um lado da igualdade e as letras pro outro (invertendo os sinais)
3x + 12 = 40 + x -> 3x - x = 40 - 12 -> 2x = 28 -> x = 14