exam Maths Puzzle Numerical Ability

how do you solve the linear system 6x+6y=-2 y=-x

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exam Other Question

can you please help me solve the following inequalities and graph the solution: (((x/3<_5))) one leg of a right triangle is 3 cm more than half the lenght of the other leg. the area of the triangle is 54cm^2.how long are each of the legs.