[tex]1. = m < b \: 180 - 65 = 115 [/tex]
[tex]2. = 2x - x = 180 \\ = \frac{3x}{3} = \frac{180}{3} \\ = x = 60 [/tex]
[tex]3. = (x + 30) = (2( x- 30) \\ = \times + 30 = 2x - 60 \\ x + 2x = - 60 - 30 \\ = \frac{3x}{3} = \frac{ - 90}{3} \\ x = 30 [/tex]
[tex] 4. = 7 x - 1 = 6x \\ 7x - 6x = 1 \\ x = 1 \\ 7x - 2 = 5x + 1 \\ = 7x - 5x = 1 + 2 \\ = \frac{2x}{2} = \frac{3}{2} \\ x = 3[/tex]
number 5 i dont know
