1. 5(x−7)5(x−7)
2. −9(p−3)−9(p−3)

3. 3(4x+3y)3(4x+3y)

4. −10(5p+7)−10(5p+7)

4

Step-by-step explanation:

because it is right unlike the other ones

jml angle lkj & angle mj = lm

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.