Question

454 срочно пж прошу

Answer 1

а)

$6a - 3 = - 39 \\ 6a = - 39 + 3 \\ 6a = - 36 \\ a = - 36 \div 6 \\ a = - 6$

б)

$2y - 3 = y + 3 \\ 2y - y = 3 + 13 \\ y = 16$

в)

$8 - 5x = 1 - x - 1 \\ - 5x + x = - 8 \\ - 4x = - 8 \\ x = ( - 8) \div ( - 4) \\ x = 2$

г)

$2a + 1 = 8a + 5 + 20 \\ 2a - 8a = 25 - 1 \\ - 6a = 24 \\ a = 24 \div ( - 6) \\ a = - 4$

д)

$9 - x = 2x \\ 2x + x = 9 \\ 3x = 9 \\ x = 9 \div 3 \\ x = 3$