a) | 2x - 2 | = x + 18
=> 2 TH:
- TH 1: 2x - 2 = x +18
=> x = 20.
TH 2: 2x - 2 = - x - 18
3x = 16( Loại vì x không nguyên)
Vậy x = 20.
b) | 2x - 8 | + 4x = 16
| 2x - 8 | = 16 - 4x
=> Có 2 TH:
- TH 1: 2x - 8 = 16 - 4x
6x = 24
=> x = 4.
- TH 2: 2x - 8 = -16 + 4x
-2x = -8
=> x = 4.
Vậy x = 4 (chỉ nêu 1 đáp án thôi nhé, không cần phải cả hai đâu)
so cac so nguyen x thoa man 15-|-2x+3|*|5+4x|=19 tim so cac so nguyen x giup minh nhe
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Tim cac gia tri nguyen cua x biet
a, Y=5x+9/ x+3
b, Tim cac cap so nguyen x , y thoa mai he thuc :
(2x-1).(y+4)
so cac so nguyen x thoa man 15 - |-2x +3|.|5+4x| = -19
tim cac so nguyen duong x,y thoa man 2x+3y=14
So cac so nguyen x thoa man 15 - |-2x+3|.|5+4x| = -19 la
So cac so nguyen x thoa man : 15 - | -2x + 3 |.|5 + 4x |= -19 la
so cac so nguyen x thoa man 5-2x+3.5+4x=-19
so cac so nguyen x thoa man |-2x+3|=8
tim so nguyen x bt
x – 18 = 22 – 47
b) 4 2 – x = 53 – 60
c) 25 – 2x = 16 – 3x
d) x – (47 – 22) = 5+ (10 – 4x)
