Tolong jawab dengan cara ya, terima kasih :)

wt = 3 gram

wp = 100 gram

ΔTb = 0,54°C

Kb = 2,52°C/m

Mr = ………………….?

ΔTb = wt/Mr x 1000/Wp x Kb

0,54 = 3/Mr x 1000/100 x 2,52

0,54 = 75,6/Mr

Mr = 75,6/0,54

Mr = 140