1/2.2x+4.2x=9.2x
2x.(1/2+4)=9.2x
2x.9/2=9.2x
2x:2x=9:9/2
x=2
vậy x=2
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1/2.2x+4.2x=9.2x
2x.(1/2+4)=9.2x
2x.9/2=9.2x
2x:2x=9:9/2
x=2
vậy x=2
4.2x+3.2x+1=80
2x+4.2x+1+3.2x+2 =92
5x+1-5x=2.2x+8.2x
d) 3.2x+2 − 9.2x = 96
d) 3.2
x+2 − 9.2
x = 96
1)tìm x bt:
a)7.2x=56
b)(2x+1)3=9.81
c)x3=82
d)4.2x-3=1
e)2.3x=162
2.2x = 28
2.2x =28
Tìm số tự nhiên x, biết: 4.2x - 3 = 125