book Maths Puzzle Numerical Ability

Rewriting the equation so that y is a function of x.

Problem: 1 + 7y = 5x -2

and

Problem: 3(x-2y) = -12(x+2y)

Thx...
Ashley

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book Other Question

Solve the following system of linear inequalities by graphing and stating coordinates in words..
3x + 4y < 12 and x + 3y < 6 and x > Solve each equation for all values of theta. the problem is sin(theta/2)
plus cosine(theta/2)= sqrt(2)