0.75x+0.5x=2.251.25x=2.25x=2.25÷1.25x=1.8
0.75x+0.5x=2.251.25x=2.25x=1.8
0.75x+0.5x=2.251.25x=2.25x=2.25/1.25x=1.8
x=1.8