exam Maths Puzzle Numerical Ability

x(5.5-1.1)-(3.7 x 5)=120
how do i solve for x?

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exam Other Question

Please help, test tomorrow

(2x+5)^1/2=4 Clyde has 26 coins altogether consisting of dimes and nickels. If he receives 2 more nickels but loses on third of his dimes, he will have $1.70. How many dimes does he start with?