3/4x-1.2=3/5x
3/4x-1.2=3/5x
0.75x-1.2=0.6x
0.75x-0.6x=1.2
0.15x=1.2
x=8
180 tons of grain are stored in warehouse A and 120 tons in warehouse B. after a part of grain is transported to warehouse B, the grain ratio of warehouse B to warehouse A is 7:3. How many tons of grain are transported to warehouse B?
180 - (180 + 120) × 37 + 3, = 180-300 × 310, = 180-90, = 90 (tons); a: warehouse a transported 90 tons of grain to warehouse B
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