Question 1125259
1)
Multiply both sides of top equation by {{{ -1 }}}
And add the equations
2)
Simply add the equations
3)
Multiply both sides of top equation by {{{ -1 }}}
And add the equations
4)
Multiply both sides of the top equation by {{{ -1}}}
And add the equations
5)
Simply add the equations
6)
Multiply top equation by {{{2 }}} and
Multiply bottom equation by {{{ 7 }}}
Then add the equations
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I will do the 4th one
{{{ -6x - 3y = 0 }}}
{{{ -3x + 3y = 9 }}}
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{{{ -9x = 9 }}}
{{{ x = -1 }}}
Plug this back into either equation
{{{ -3*(-1) + 3y = 9 }}}
{{{ 3 + 3y = 9 }}}
{{{ 3y = 6 }}}
{{{ y = 2}}}
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Hope this helps