Question

решите уравнение 21х+16х+55=166
81у+60+9у=960
59р-19р+125=565
58д+37д+212=972

Answer 1

21х+16х+55=166
37х=166-55
37х=111
х=111:37
х=3

81y+60+9y=960
90y=960-60
90y=900
y=900:90
y=10

59p-19p+125=565
40p=565-125
40p=440
p=440:40
p=11

58д+37д+212=972
95д=972-212
95д=760
д=760:95
д=8

Answer 2

21x+16x+55=166
37x+55=166
37x=166-55
37x=111
x=111:37
x=3

59p-19p+125=565
40p=565-125
40p=440
p=440:40
p=11

58д+37д+212=972
95д=972-212
95д=760
д=760:95
д=8