Please simplify the top equation to become the bottom equati

Please simplify the top equation to become the bottom equation. Show all steps please. ( j = square root of negative one)

Solution

(20-V1)/10 = V1/-j2.5 + (V1 -V2)/j4

rationalise V1/-j2.5 = V1(j2.5)/6.25 = V1j/2.5

rationalise (V1 -V2)/j4 = j(V1 -V2)/-4 = (j/4)(v2 -V1)

(20-V1)/10 = V1j/2.5 + (j/4)(v2 -V1)

multiply both sides by 10

20 -V1 = 4V1*j + 2.5j*(V2 -V1)

20 = (1+4j - 2.5)V1 + 2.5J*V2

20 = (1+1.5j)V1 + 2.5j*V2

Proved