Question

Rezolvati ecuatia:
2[15-4(3×-8)]-7=3[18-5(2×-3)]+18

Answer 1

2 [ 15 - 4 ( 3 x - 8 ) ] - 7 = 3 [ 18 - 5 ( 2 x - 3 ) ] + 18

2 ( 15 - 12 x + 32 ) - 7 = 3 ( 18 - 10 x + 15 ) + 18

2 ( 47 - 12 x ) - 7 = 3 ( 33 - 10 x ) + 18

94  - 24 x - 7 = 99 - 30 x + 18

- 24 x  + 87 = - 30 x + 117

- 24 x + 30 x = 117 - 87

6 x = 30

x = 30 : 6

x = 5