Question 252962
Here are the original; equations:
(i) {{{5x - (2/5)y = 28 }}}
(ii) {{{2x + (3/2)y = 39/2}}}
Since you are not a fan of fractions, multiply (i) by 5 and then (ii) by 2 to get
(iii) {{{25x - 2y = 140}}}
(iv) {{{4x + 3y = 39}}}
Now multiply (iii) by 3 and (iv) by 2 to get
(v) {{{75x - 6y = 420}}}
(vi) {{{8x + 6y = 78}}}
add down and solve for x.
{{{83x = 498}}}
{{{x = 6}}}
Now find y.
{{{y = 5}}}
(6,5)