Question

Номер 351 уравнения Бод буквами д) е) . Номер 352 уравнения под буквами а) б) в) ЗАРАНЕЕ СПАСИБО

Answer 1

#351.
д) 4 + 25y = 6 + 24y
25y - 24y = 6 - 4
y = 2
e) 11 - 5x = 12 - 6x
-5x + 6x = 12 - 11
x = 1
#352.
a) 5x +3 = 2x
5x - 2x = -3
3x = -3
x = -3/3 = -1
б) -0.4a - 14 = 0.3a
-14 = 0.3a + 0.4a
0.7a = -14
a = -14/0.7 = -20
в) 8x - 25 = 3x + 30
8x - 3x = 30 + 25
5x = 55
x = 55/5 = 11

Answer 2

351 (д)
$4 + 25y = 6 + 24y \\ 25y - 24y = 6 - 4 \\ y = 2$
351 (е)
$1 1 - 5x = 12 - 6x \\ - 5x + 6x = 12 - 11 \\ x = 1$
352 (а)
$5x + 3 = 2x \\ 5x - 2x = - 3 \\ 3x = - 3 \\ x = - 3 \div 3 \\ x = - 1$
352 (б)
$- 0.4a - 14 = 0.3a \\ - 0.4a - 0.3a = 14 \\ - 0.7a = 14 \\ a = 14 \div ( - 0.7) \\ a = - 140 \div 7 \\ a = - 20$
352(в)
$8x - 25 = 3x + 30 \\ 8x - 3x = 30 + 25 \\ 5x = 55 \\ x = 55 \div 5 \\ x = 11$