(95-x)-13=55
95-x=55+13
95-x=68
x=95-68
x=27
400*235=94000см
94000:47=2000см\сек
2000см\сек=72км\час
Б) 4/5 * 10/27 *15/16 = 8/27*15/16 = 15/54= 5/18
в) <span>1/2*2/3*3/4*4/5 =1/3*3/5 = 1/5 =5
г) </span><span>6/7*7/8*8/9*9/10 = 6/8*8/10=6/10
д) </span><span>4/7*35/46*3/5 = 20/46*3/5 = 12/46 = 6/23
</span>е)1/2*2/3*3/4*...*23/24*24/25 = <span>1/2*2/3*3/4 =</span>1/3*3/4 =1/4 =4...... 23/24*24/25 = 23/25