Question

3
3 x - 7x + 4 = 0
2
9y - 12y+ 4=0
2
5x+3x +5=0

Answer 1

$3x - 7x + 4 = 0 \\ - 4x = - 4 \times ( - 1) \\ 4x = 4 \\ x = 4 \div 4 \\ x = 1$

$9y - 12y + 4 = 0 \\ - 3y = - 4 \times ( - 1) \\ 3y = 4 \\ y = 4 \div 3 \\ y = 1.33...$

$5x + 3x + 5 = 0 \\ 8x = - 5 \\ x = 5 \div 8 \\ x = 0.625$