1. (5a-7b)-(2a-5b) 2. (5a-7b)+(2a-5b) 3. (-9a+3b)-(-11a-8b) 4. (-9a+3b)+(-11a-8b) 5. (-3a-8b)-(4a-4b) 6. (-3a-8b)+(4a-4b) 7. (a-5b)-(6a-2b) + (2a-3b) 8. (a+5b)+(-6a+2b)-(-2a-3b) 9. (a-5b)+(-6a-2b)-(-2a-3b) 10. (a-5b)+(6a-2b)-(2a-3b) A. 2a+11b B. a-12b C. -7a-4b D. 7a-12b E. -3a-6b F. 3a-2b G. 3a+6b H.-20a-5b 1.-3a+10b J. 5a+4b K. -3a-4b​

Here are my solution and answers:1.)  [tex]$\sf{(5a - 7b) - (2a - 5b) \rightarrow 5a - 7b - 2a + 5b = \bold{\underline{3a-2b}}}$[/tex] 2.) [tex]$\sf{(5a - 7b) + (2a - 5b) \rightarrow 5a-7b+2a-5b = \bold{\underline {7a - 12b}}}$[/tex]3.) [tex]$\sf{(-9a + 3b) - (-11a - 8b)\rightarrow -9a + 3b + 11a + 8b =\bold{\underline{2a+11b}}}$[/tex]4.) [tex]$\sf{(-9a + 3b) + (-11a - 8b)\rightarrow -9a + 3b - 11a - 8b =\bold{\underline{-20a-5b}}}$[/tex]5.) [tex]$\sf{(-3a - 8b) - (4a - 4b)\rightarrow -3a - 8b - 4a + 4b =\bold{\underline{-7a-4b}}}$[/tex]6.) [tex]$\sf{(-3a - 8b) + (4a - 4b)\rightarrow -3a - 8b + 4a - 4b =\bold{\underline{a-12b}}}$[/tex]7.) [tex]$\sf{(a - 5b) - (6a - 2b) + (2a - 3b) \rightarrow a - 5b - 6a + 2b + 2a - 3b = \bold{\underline{-3a-6b}}}$[/tex]8.) [tex]$\sf{(a + 5b) + (-6a + 2b) - (-2a - 3b) \rightarrow a + 5b - 6a + 2b + 2a + 3b = \bold{\underline{-3a+10b}}}$[/tex]9.) [tex]$\sf{(a - 5b) + (-6a - 2b) - (-2a - 3b)\rightarrow a - 5b - 6a - 2b + 2a + 3b = \bold{\underline{-3a-4b}}}$[/tex]10.) [tex]$\sf{(a - 5b) + (6a - 2b) - (-2a - 3b)\rightarrow a - 5b + 6a - 2b - 2a + 3b = \bold{\underline{5a-4b}}}$[/tex]

Answered by PrincessUmbriel | 2025-07-14