Решите уравнение х*14*10=280; 163+37х+18х=328; (573+а)-173=617; 108-(90+у)=15

X*14*10=280
x*140=280
x=280:140
x=2
163+37x+18x=328
163+55x=328
55x=165
x=3
(573+а)-173=617
573+a=780
a=207

X*14*10=280
x*140=280
x=280/140
x=2

163+37x+18x= 328
37x+18x = 328-163
55x = 165
x = 165/55
x = 3

(573+a)-173 = 617
573+a = 617+173
a = 617+173-573
a = 217

180-(90+y) = 15
-(90+y) = 15-180
-90-y=-165
-y=-165+90
-y=-75
y=75