exam Maths Puzzle Numerical Ability

2(3x+y)+5(x+2y)

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exam Other Question

please solve this system of equations

2^(5x+y)=0.25^(x-2y+3/2)
log(x-y)=1/log5+log2

find {{{x}}}and {{{y}}} What number exceeds 23 by 4 more than twice the amount by which 15 exceeds -3?