Question

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$1] \sqrt\frac{49}{81} +\sqrt\frac{1}{4} =\\\\2] \frac{x}{2} = 12\\\\3] 12x = 40 + 2x\\\\4] -2x + 16 = 6x\\\\5] 4x - 30 = - 11x\\\\6] 2x + 10 = 3x$

Answer 1

Resposta:

$1) \frac{7}{9}$

$2) \frac{x}{2} = 12 \\ x = 12 \times 2 \\ x = 24$

3)4

4)2

5)2

6)10

Explicação passo-a-passo:

$1)\sqrt{ \frac{49}{81} } = \frac{7}{9}$

$2) \frac{x}{2} = 12 \\ x = 12 \times 2 \\ x = 24$

3)12x=40+2x

12x-2x=40

10x=40

x=40÷10

x=4

4)-2x+16=6x

16=6x+2x

16=8x

16÷8=x

2=x

5)4x-30=-11x

4x+11x=30

15x=30

x=30÷15

x=2

6)2x+10=3x

10=3x-2x

10=x