Question 252703
OUr original equations are:
(i){{{4ax + by = 11ab}}}
(ii) {{{8ax - 5by = ab}}}
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STEP #1 - multiply (i)  equations by 5
(iii) {{{20ax + 5by = 55ab}}}
(ii) {{{8ax  - 5by = ab}}}
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STEP #2 - add down to eliminate by.
(v) 28ax = 56ab.
We must assume that a, b, x, and y are not all zero.
x = 2b.
-- STEP #3 - find y.
Y = 3a.