book Maths Puzzle Numerical Ability

1. 4(2y0 + 5y = 12

2. 12y + 6 - 11y - 1 = -8 + 10

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book Other Question

-3x2 +x -2 =0 Can you please help me solve this problem? z^2-{y+3)^2

Thank you in advance for your help.