Question 1127372
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Then it means that


    10x = 5     (1)

and

    -4 = 28y,   (2)



which implies  x = {{{5/10}}} = {{{1/2}}}   and   y = {{{-4/28}}} = {{{-1/7}}}.


That's all.
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Complex numbers are equal if and only if their real parts are equal  <U>AND</U>  their imaginary parts are equal, too.