Question

Решите : 1)32,4:(7,06икс-101,2)×1,8=1,458!
2)12-7 21/29+ ×+4 23/29=12 2/29
3)(0,95×-1,82):1,7=3,4
4)24,8:(6,08×-20,8)×2,7=1,674.
×-икс

Answer 1

$frac{32,4}{7,06x-101,2}*1,8=1,458\7,06x-101,2=32,4:(frac{1,458}{1,8})=32,4:0,81\7,06x=40+101,2\x=frac{141,2}{7,06}=20$

$12-7frac{21}{29}+x+4frac{23}{29}=12frac{2}{29}\x=12frac{2}{29}+7frac{21}{29}-4frac{23}{29}-12=19frac{23}{29}-4frac{23}{29}-12=15-12=3$

$frac{0,95x-1,82}{1,7}=3,4\0,95x=3,4*1,7+1,82=5,78+1,82\x=frac{7,6}{0,95}=8$

$frac{24,8}{6,08x-20,8}*2,7=1,674\6,08x-20,8=24,8:(frac{1,674}{2,7})=24,8:0,62\6,08x=40+20,8\x=frac{60,8}{6,08}=10$