Question

Помогите сделать м решением 105

Answer 1

1)(2/6+3/6)х=3,75
5/6*х= 375/100
х=375/100*6/5
х= 75/50*3
х=4,5

2)(3/5-1/4)*х=49/10
(12/5-5/4)*х=49/10
7/10*х=49/10
х=49/10*10/7
х=7
3)(7/8-1/5)*х=81/10
(35/40-8/40)*х=81/10
27/40*х=81/10
х=81/10*40/27
х=3*4
х=12
4)(4-17/7)*х=33/14
(28/7-17/7)*х=33/14
11/7*х=33/14
х=33/14*7/11
х=3/2=1,5