exam Maths Puzzle Numerical Ability

Solve each system by the addition method.

(1.5)x-2y=-0.25
3x+(1.5)y=6.375

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exam Other Question

Please help how do you solve s=c(1+r/100)If gross domestic product 1.062 trillion in U.S. dollars in the first half of 2008 with a 10.4 percent increase year on. What would the cos square root 81x^4