Question

Află termenul nesunoscut: a) 5×(24×17+52×25-a)=0 b) c-[24×48-20×(52-47)]=297 b) 18×3+b×[(72-5×12)-2]=1004 d) 12×25×5-2×(d+4)=240​

Answer 1

a) a=24x17+52x25

a=408+1300

a=1708

b)  c=(1152-20x5)+297

c=(1152-100)+297

c=1052+297

c=1149

c)  b=18x3 x [12-2]

b=54 x 2

b=108

d) d= 300x5-2+4

d=1500-2+4

d=1502