1)8+х\7=х+2
7*(х+2)=8+х
7х+14=8х
8х-7х=14
х=14
2)2+х\5=х+1\2
2*(2+х)=5*(х+1)
4+2х=5х+5
5х-2х=4-5
3х=-1
х=-1\3
3)8+х\4=х+5
8+х=4*(х+5)
8+х=4х+20
х-4х=20-8
-3х=12
х=-4
4)х+8\2+5=7х
х+8+5*2\2=7х
х+8+10\2=7х
х+18\2=7х
х+18=2*7х
х+18=14х
х-14х=-18
-13х=-18
х=18\13
(3-10n0*2=3*2-10n*2=6-20n
подставим данные:
33=1,1*5*10^6*3*10^-6*log2(9\U)
33\1,1*15=log2(9\U)
2=log2(9\U)
log2(4)= log2(9\U)
9\U=4
u=2,25
Решение
(3¹⁰ * x²⁰ * 3³ * x³) / (3¹² *x²⁰) = - 192
(3¹³ * x³) / 3¹² = - 192
3*x³ = - 192
x³ = - 192/3
x³ = - 64
x = - 4