Question 938255
Aim for:
( terms involving the unknown ) = ( terms that are numbers )
{{{ 7y - 11 - 10y + 3 = 7 }}}
First get terms with the unknown together
{{{ 7y - 10y - 11 + 3 = 7 }}}
Perform addition on the numbers on the left
{{{ 7y - 10y - 8 = 7 }}}
Add {{{ 8 }}} to both sides
{{{ 7y - 10y = 15 }}}
Perform addition on the terms with unknowns
{{{ -3y = 15 }}}
Divide both sides by {{{ -3 }}}
{{{ y = -5 }}}
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check the answer:
{{{ 7y - 11 - 10y + 3 = 7 }}}
{{{ 7*(-5) - 11 - 10*(-5) + 3 = 7 }}}
{{{ -35 - 11 + 50 + 3 = 7 }}}
Combine terms on the left 2 at a time
{{{ -46 + 53 = 7 }}}
{{{ 7 = 7 }}}
OK
hope this helps