Question

2) Resolva as equações do1º grau
a) x + 2 = 10 b) 5a = 20 c) 3b – 6 = 0 d) 7x + 11 = 2x + 13

Answer 1

Explicação passo-a-passo:

a) x + 2 = 10

x = 10 – 2

x = 8

b) 5a = 20

a = 20

5

a = 4

c) 3b – 6 = 0

3b = 0 + 6

3b = 6

b = 6

3

b = 2

d) 7x + 11 = 2x + 13

7x – 2x = 13 – 11

5x = 2

x = 2

5

x = 0,4

Bons estudos!

Answer 2

$a)x + 2 = 10$

$x = 10 - 2$

$\large\boxed{ x = 8}$

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$b)5a = 20$

$a = \frac{20}{5}$

$\large\boxed{ a= 4}$

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$c)3b - 6 = 0$

$3b = 6$

$b = \frac{6}{3}$

$\large\boxed{ b= 2}$

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$d)7x + 11 = 2x + 13$

$7x - 2x = 13 - 11$

$5x = 2$

$\large\boxed{ x = \frac{2}{5} }$

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Att, IzabelaCristina2006 ❤️