Question 841144
(1) {{{ x - 2y = 5 }}}
(2) {{{ 2x - y = 16 }}}
Multiply both sides of (1) by
{{{ -2 }}} and add the equations
(2) {{{ 2x - y = 16 }}}
(1) {{{ -2x + 4y = -10 }}}
{{{ 3y = 6 }}}
{{{ y = 2 }}}
and
(1) {{{ x - 2y = 5 }}}
(1) {{{ x - 2*2 = 5 }}}
(1) {{{ x = 9 }}}