Question

resolva as equações do primeiro grau
a)2X-3=9
b)3x+4=10
c)4x+7=11
d)5x-6=14​

Answer 1

Resposta:

vamos lá!

Explicação passo-a-passo:

a) 2x-3=9

2x=9+3

2x=12

x=12/2

x= 6

2.6-3=9

b)3x+4=10

3x=10-4

3x=6

x=6/3

x=2

3.2+4=10

c)4x+7=11

4x=11-7

4x=4

x=4/4

x=1

4.1+7=11

d)5x-6=14

5x=14+6

5x=20

x=20/5

x=4

5.4-6=14

espero ter ajudado!!!

Answer 2

$a)2x - 3 = 9$

$2x = 3 + 9$

$2x = 12$

$x = \frac{12}{2}$

$\boxed{ x = 6}$

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$b)3x + 4 = 10$

$3x = 10 - 4$

$3x = 6$

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

$\boxed{ x = 2}$

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$c)4x + 7 = 11$

$4x = 11 - 7$

$4x = 4$

$x = \frac{4}{4}$

$\boxed{ x = 1}$

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$c)5x - 6 = 14$

$5x = 14 + 6$

$5x = 20$

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

$\boxed{ x = 4}$

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Att, IzabelaCristina2006 ❤️