Question

решите уравнение а) 63/х=91/65 в)1|8:х= 2 3/4:4

Answer 1

а) 63/x=91/65
63*65=91*x
7*9*13*5=7*13*х
8*5=х
х=40

б) (1/8)/x=(2 3/4)/4
1/8*4=2 3/4*x
4/8=11/4*x
1/2=11/4*x
x=(1/2)/(11/4)
x=1/2*4/11=4/22=2/11

Answer 2

а)63*65=х*91
4095=х*91
91*х=4095
х=4095/91
х=45
б)1/8*4/1=x*23/4
1/2=х*23/4
x*23/4=1/2
x=23/2