Question 519661
{{{ 3x +5y = 7 }}}
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Subtract 3x from both sides.
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{{{ 3x-3x +5y = 7 -3x }}}
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{{{ 5y = -3x +7 }}}
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Divide both sides by 5.
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{{{ 5y/5 = (-3x +7) /5 }}}
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{{{ y = (-3x)/5 +7/5 }}}
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{{{ y = -(3/5)x +7/5 }}}
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Done.