Question

Determinati valoarea lui a din:
(324:6+345:5)•2+1237=43•a+1354.
VĂ ROOOOOG,AJUTATI-MĂ URGENT!
DAU SI CORONA LA CEL MAI BUN RĂSPUNS!!!!!!!

Answer 1

(54+69)•2+1237=43a+1354
123•2+1237=43a+1354
246+1237=43a+1354
1483=43a+1354
43a=1483-1354
43a=129
a=129:43
a=3

Answer 2

$\displaystyle (324:6+345:5)\cdot2+1237=43\cdot a+1354 \\ (54+69) \cdot 2+1237=43a+1354 \\ 123 \cdot 2+1237=43a+1354 \\ 246+1237=43a+1354 \\ -43a=1354-246-1237 \\ -43a=-129 \\ a= \frac{129}{43} \\ a=3$