Решите уравнения и сделайте проверку. 91=m+19 753-2p=275 70+2n=266 98=n-18 .

91=m+19     19+72=91
m=91-19            91=91
m=72
753-2p=275          753- 2*239=275
2p=478                             275=275
p=239
70+2n=266          70+2*98=266
2n=196                        266=266
n=98
98=n-18             116-18=98
n=116                        98=98