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17=5x\times 2-5\times 7
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 5x, the least common multiple of 5x,x.
17=10x-5\times 7
Multiply 5 and 2 to get 10.
17=10x-35
Multiply -5 and 7 to get -35.
10x-35=17
Swap sides so that all variable terms are on the left hand side.
10x=17+35
Add 35 to both sides.
10x=52
Add 17 and 35 to get 52.
x=\frac{52}{10}
Divide both sides by 10.
x=\frac{26}{5}
Reduce the fraction \frac{52}{10} to lowest terms by extracting and canceling out 2.