Question

Responda essas equações do 1 grau

a)2x + 4= x + 9

b)5x - 10 =10

C) 4x - 10 = 2x + 2​

Answer 1

Explicação passo-a-passo:

a)

2x + 4 = x + 9

2x - x = 9 - 4

x = 5

b)

5x - 10 = 10

5x = 10 + 10

5x = 20

x = 20/5

x = 4

c)

4x - 10 = 2x + 2

4x - 2x = 2 + 10

2x = 12

x = 12/2

x = 6

Answer 2

Boa tarde!

$2x + 4= x + 9 \\ 2x - x = 9 - 4 \\ x = 5 \\ \\ 5x - 10 = 10 \\ 5x = 10 + 10 \\ 5x = 20 \\ x = \frac{20}{5} = 20 \div 5 = 4 \\ \\ 4x - 10 = 2x + 2 \\ 4x - 2x = 2 + 10 \\ 2x = 12 \\ x = \frac{12}{2} = 12 \div 2 = 6$