x=5
Explanation:
6(3x-5)-7x=25
18x-30-7x=25
11x-30=25
6 ( 3x - 5 ) - 7x = 25..
18x - 30 - 7x = 25
18x - 7x = 25 + 30
11x = 55
x = 55 / 11
x = 5
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