Question

математика 5класс решить уравнение 3ц.3/10:(1/4x+5/12)-2ц3/5=7/10

Answer 1

3*3/10:(1/4х+5/12)-2*3/5=7/10
1)3*3/10:(1/4х+5/12)=7/10+13/5
2)33/10:(1/4х+5/12)=7/10+26/10=33/10
3)1/4х+5/12=33/10*10/33=1
4) 1/4х=1+5/12
5) 4х=1:(1+5/12)=12/12:(12/12+5/12)=12/12*12/17=12/17
6)х= 12/17:4=12/17:68/17=12/17*17/68=12/68=3/17

Answer 2

26/10 откуда?