Question 267036
here is the system
(i) {{{x - y = 3}}}
(ii) {{{1/2x - 2y = 0}}}
step 1 - multiply (ii) by (-2) to get
 (iii) {{{-1x + 4y = 0}}}
step 2 - add (i) and (iii) to get
(iv) {{{3y = 3}}}
step 3 - divide to get
 (v) {{{y = 1}}}
solve for x to get
 (vi) {{{x = 4}}}