Question

calculeaza 2×[(2×a-36):2+20]-32=10

Answer 1

2×[(2×a-36):2+20]-32=10
Notam cu X expresia dintre parantezele drepte:
2×X-32=10
2X=42, X=21
Relatia devine:
(2×a-36):2+20=21
Notam cu Y relatia dintre paranteze:
Y:2+20=21
Y:2=1, Y=2
Relatia devine:
2a-36=2
2a=38, a=38:2, a=19