Question

Plz repede! Dau coroana si 50 de puncte!​

Answer 1

Bună!

$x = 4 \\ 2x = 2 \times 4 = 8 \\ x + 3 = 4 + 3 = 7 \\ 2x - 3 = 2 \times 4 - 3 = 8 - 3 = 5$

$x = 7 \\ 2x = 2 \times 7 = 14 \\ x + 3 = 7 + 3 = 10 \\ 2x - 3 = 2 \times 7 - 3 = 14 - 3 = 11$

$x = 11 \\ 2x = 2 \times 11 = 22 \\ x + 3 = 11 + 3 = 14 \\ 2x - 3 = 2 \times 11 - 3 = 22 - 3 = 19$

$x = 20 \\ 2x = 2 \times 20 = 40 \\ x + 3 = 20 + 3 = 23 \\ 2x - 3 = 2 \times 20 - 3 = 40 - 3 = 37$

$a = 3 \\ b = 2 \\ a + b = 3 + 2 = 5 \\ 2a - b = 2 \times 3 - 2 = 6 - 2 = 4$

$a = 2 \\ b = 3 \\ a + b = 2 + 3 = 5 \\ 2a - b = 2 \times 2 - 3 = 4 - 3 = 1$

$a = 5 \\ b = 1 \\ a + b = 5 + 1 = 6 \\ 2a - b = 2 \times 5 - 1 = 10 - 1 = 9$

$a = 11 \\ b = 9 \\ a + b = 11 + 9 = 20 \\ 2a - b = 2 \times 11 - 9 = 22 - 9 = 13$