Question 425698
(1) {{{  y = 2x - 2 }}}
(2) {{{ y = x + 2 }}}
Substitute {{{y}}} in (2) for {{{y}}} in (1)
{{{ x + 2 = 2x - 2 }}}
Subtract {{{x}}} from both sides
{{{ 2 = 2x - 2 }}}
Add {{{2}}} to both sides
{{{ 4 = 2x }}}
Divide both sides by {{{2}}}
{{{  x = 2 }}}
Now replace {{{x}}} in (1) with {{{x = 2}}}
{{{ y = 2*2 - 2 }}}
{{{ y = 4 - 2 }}}
{{{ y = 2 }}}