Răspuns :
Răspuns:
(54+69)×2+1237=43×a+1354=>123×2+1237=43×a+1354=>246+1237=43×a+1354=>1483=43×a+1354=>43×a=1483-1354=>43×a=129=>a=129÷43=>a=3
Explicație pas cu pas:
(324:6+345:5)×2+1237=43×a+1354
(54+69)×2+1237=43×a+1354
123×2+1237=43×a+1354
246+1237=43×a+1354
1483=43×a+1354
43×a=1483-1354
43×a=129
a=129:43
a=3
sper ca te-am ajutat :3