Question

{10-2×[1+3:(2×a-5)×2-2]}×5+10=10
Dau coroană!​

Answer 1

{10-2×[1+3:(2×a-5)×2-2]}×5+10=10

{10-2×[1+3:(2×a-5)×2-2]}×5=0

10-2×[1+3:(2×a-5)×2-2]=0

2×[1+3:(2×a-5)×2-2]=10

1+3:(2×a-5)×2-2=5

3:(2×a-5)×2-2=4

3:(2×a-5)×2=6

3:(2×a-5)=3

2×a-5=1

2×a=6

a=6:2

a=3