Question

1.2020-(2019 - х) =2018
2.135+24:а=147
3.88х:5=440
4.(11х+12х):13=69
5.10000:(100х+1)=10000

Answer 1

Пошаговое объяснение:

1)2020-2019+x=2018

1+x=2018

x=2017

2)135+24:a=147

24:a=147-135

24:a=12

a=24÷12=2

a=2

3)88x:5=440

88x=440×5

88x=2200

x=25

4)23x:13=69

23x=69×13

23x=897

x=39

5)10000÷(100x+1)=10000

100x+1=1

100x=0

x=0

Answer 2

2020-(2019-x) =2018
2020-2019+x=2018
1+x=2018
x=2018-1
x=2017

135+24:a=147
135+24/x =147
24/x = 147-135
24/x=12
24=12x
12x=24
x=2

88x:5=440
88/5x =440
x=25

(11x+12x) : 13=69
23x : 13 = 69
23/13x =69
x=39

10000:(100x+1)=10000
10000/100x+1 = 10000
10000=10000(100x +1)
1= 100x +1
0=100x
100x=0
x=0