4/5x+1=7/8 ,4x-1/8=3/11, 11/13=8/3x-1.Срочно.

Question

4/5x+1=7/8 ,4x-1/8=3/11, 11/13=8/3x-1.Срочно.

Answer 1

1)4/5 *х+1=7/8
4/5 *х=-1+7/8
4/5 *х=-1/8
х=-1/8:4/5=(-1/8*5/4)=-5/32

2)4х-1/8=3/11

4х=1/8+3/11
4х=(11+24)/88
4х=35/88
х=35/88:1/4=35/88*4/1=35/22

3)11/13=8/3 *х -1
8/3 *х=11/13+1

8/3 *х =24/13
х=24/13:8/3=24/13*3/8=
9/13