Question

Me ajudemm por favoor!!!!​

Answer 1

Resposta:

a) ( 3 )

$8x - 30 = 10 \\ 8x = 10 + 30 \\ 8x = 40 \\ x = \frac{40}{8} \\ x = 5$

b) ( 6 )

${( + 3)}^{3} - {( + 2)}^{1} = \\ 27 - 2 = \\ 25 \\ \\ {( + 3)}^{3} = 3 \times 3 \times 3 = 27$

c) ( 7 )

${ + 9}^{0} + ( - 28) \div ( - 2) = \\ 1 + 14 = \\ 15$

d) ( 2 )

$2x + 25 = x + 32 \\ 2x - x = 32 - 25 \\ x = 7$

e) ( 1 )

${( + 100)}^{1} + ( - 3).( + 30) = \\ 100 - 3 \times 30 = \\ 100 - 90 = \\ 10$

f) ( 5 )

$3.(x - 4) = 138 \\ 3x - 12 = 138 \\ 3x = 138 + 12 \\ 3x = 150 \\ x = \frac{150}{3} \\ x = 50$

g) ( 4 )

$( - 4).( - 5) - ( + 3).( + 6) = \\ 20 - 18 = \\ 2$

h) ( 8 )

$6x - 60 = 5x - 55 \\ 6x - 5x = - 55 + 60 \\ x = 5$

Espero ter ajudado!