Решение в приложении
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2x/9=2/3 *9
2x=2*3
x=3
1/5=2/5x *5
1=2/x
x=2
1.5/4x=0.3/10 *20
1.5*20/4x=0.3*20/10
1.5*5/x=0.3*2
7.5/x=0.6
x=7.5/0.6
x=12.5
<span>2/x=x/8 *8
16/x=x
x^2=16
x=4
</span>
1)2/3 :4/15=2/3*15/4=5/2=2ц1/2=2,5 2)0,216/0,15+5/2=216/150+375/150=591/150=3ц141/150=3ц 47/50 = 3,94 3)7,7/(24ц3/4)=77/10:99/4=77/10*4/99=14/45 4)196/225—14/45=196/225—70/225=126/225=14/25 5)0.695/1.39=0.5 6)3,94+14/25+0,5=3,94+0,56+0,5=5