Question

2. Resolva as equações de 1' grau
(COM CÁLCULO)

a)
$\times + 30 = 40$
b)
$\times - 17 = - 9$
c)
$- 9 \times + 8 - 43$
d)
$2x = 7 -$
e)
$\frac{ \times }{7} = - 2$
f)
$3 \times + 2 = 2 \times - 11$
g)
$\times + 4.( \times - 1) = 9 - 2.( \times + 3$
h)
$- 3(3 \times - 42) = 2 \times - 11$
i)
$\frac{ \times }{4} - \frac{7}{10} = \frac{2 \times }{5} - 1$
j)
$\times + \frac{1}{2} = \frac{3}{2}$
k)
$2 \frac{( \times - 1)}{3} + \frac{3(1 + \times )}{2} = \frac{1}{2} - \frac{x1}{3}$





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Answer 1

Resposta:

a) x=10

Explicação passo-a-passo:

x+30=40

x=40-30

x=10