3x(12x – 4) – 9x(4x – 3) = 30
3x.12x – 3x.4 – (9x.4x – 9x.3) = 30
36x2 – 12x – 36x2 + 27x = 30
(36x2 – 36x2) + (27x – 12x) = 30
15x = 30
x = 2
Vậy x = 2.
tìm x,biết: a,3x(12x-4)-9x(4x-3)=30
Tìm x biết:
3x(12x-4)-9x(4x-3)=30
3x (12x -4 )- 9x (4x-3)= 30 . tìm x
Tìm x :
3x(12x - 4) - 9x(4x - 3) = 30
3X(12X-4) - 9X(4X-3)=30
Tìm X ?
Tìm x, biết :
a) 3x.(12x - 4) - 9x.(4x - 3) = 30
b) x.(5 - 2x) + 2x.( x - 1) = 15
Tìm x,biết
a)3x(12x-4)-9x(4x-3)=30
b)x(5-2x)+2x(x-1)=15
TÌm x, biết:
\(3x\left(12x-4\right)-9x\left(4x-3\right)=30\)
Tìm x, biết:
a) 3x(12x – 4) – 9x(4x – 3) = 30
b) x(5 – 2x) + 2x(x - 1) = 15
