Question

n Află numărul necunoscut:
a + 25 x 48 = 3140
b-21 x 157 = 1089
86 x 104 -c= 35 x 29
d - 47 x 14 = 134 x 20​

Answer 1

a+25•48=3140=>a+1200=3140=>a=3140-1200=>a=1940

b-21•157=1089=>b-3297=1089=>b=1089+3297=>b=5016

86•104-c=35•29=>8944-c=1015=>c=8944-1015=>c=7929

d-47•14=134•20=>d-658=2680=>d=2680+658=>d=3338