18. If 2n-7 X 5n-4 = 1250, find the value of n.
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2n-7×5n-4=1250 2n-35n-4= 1250 -33n-4=1250 -33x=1250+4 -33x=1254 -x =1254÷33 x=-38. bolivianouft and 41 more ...
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