1) (х+121)+38=269. 2) (127+р)-89=1009. 3) 872-(407+с)=122. - вопрос №799786811213826921278910093872407122412145 от kartofan2016p08uuy 14.09.2021 07:55

Question

Математика: 1) (х+121)+38=269. 2) (127+р)-89=1009. 3) 872-(407+с)=122. 4) 121: (х-45)=11. 5) (х-12): 10=4 20

kartofan2016p08uuy · Answer

1)х+121=269-38х+121=231х=231-121х=1102)127+p=1009+89127+p=1098p=1098-127p=9713)407+c=872-122407+c=750c=750-407c=3434)x-45=121÷11x-45=11x=11+45x=565)x-12=4×10x-12=40x=40+12x=52...