exam Maths Puzzle Numerical Ability

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exam Other Question

Please help me to solve these equations using the elimination method?

0.06x+0.05y=0.07
0.4x-0.3y=1.1


-4.5x+7.5y=6
-x+1.5y=5


17x+21y=1
17x-5y=6

Thank you
Can you give me a hand with this one? Thanks!

x/x-2 = 2/x-3 Solve for x

thanks!