Example 100x+25(63-x)=3000
4x+(63-x)=120
3x+63=120
x=19
Please step by step
Questions 200x+50(60-x)=6000
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Answer:
200x+3000-50x=6000
200x-50x=6000-3000
150x=3000
x=3000/150
x=20
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