300-2.(x-2)=168
=>2.(x-2)=300-168
=>2.(x-2)=132
=>x-2=132:2
=>x-2=66
=>x-66+2
=>x=68
300 -2(x-2) = 168
2(x-2) = 300 - 168 = 132
x - 2 = 132 : 2 = 66
x = 66 + 2 = 68
300-2.(x-2)=168
=>2.(x-2)=300-168
=>2.(x-2)=132
=>x-2=132:2
=>x-2=66
=>x-66+2
=>x=68
300 -2(x-2) = 168
2(x-2) = 300 - 168 = 132
x - 2 = 132 : 2 = 66
x = 66 + 2 = 68
Tính
A=100+98+96+...+2-97-95-...1
B= 1+ 2 - 3 - 4 + 5 + 6 - 7 - 8 + 9 + 10 - 11 - 12 + ... - 299 - 300 + 301 + 302
c, (56*27+56*35):62
d, \(\frac{168\cdot168+168\cdot58}{\frac{ }{ }\frac{ }{ }\frac{ }{ }\frac{ }{ }\frac{ }{ }\frac{ }{ }\frac{110}{ }\frac{ }{ }\frac{ }{ }\frac{ }{ }\frac{ }{ }\frac{ }{ }\frac{ }{ }\frac{ }{ }}\)
ket qua phep tinh 1682 - 158 x 168 chia 110
2 mũ x + 5.2 mũ x+2=168
2x + 2x+2 + 2x+4 =168
9 734 - 2 . x = 168
10^x+168=y^2
tim x, y
10^x+168=y^2
10 mũ x + 168 = y mũ 2
tìm x biết BCNN (24,x)=168 và UCLN (24,x) = 2