Question

2t-4supra2 =0.1×(10t-20)

Answer 1

2t - 4 / 2 = 0,1 x (10t - 20)

4t - 4 = 2(10t -20) 1/10
2•2t - 2•4/2 = 2•0,1 (10t-20)
4t-4 = 2/10•10t - 2 1/10 • 20
4t - 4 = 20 1/10t - 40 1/40
4t - 4 = 20•1t / 10 - 40•1 / 10
2t - 4/2 = 0,1 (10t - 20)
4t - 4 = 20t / 10 - 40/10
4t - 4 = 2t - 4
4t = 2t
4t - 4 + 4 = 2t - 4 + 4
4t - 4 = 20•1t / 10 - 40•1 / 10
4t - 2t = 2t - 2t
2t = 0.