Complete the following proof.

given: 2x + 11 = 15
prove: x = 2

statements reason
1. 2x + 11 = 15 1. given
2. 2x = 4 2.
3. x = 2 3. division property of equality

it is the subtraction property of equality

hence, the required result is

step-by-step explanation:

suppose we have two matrices a and b

we will assume the two matrices

we have to compute b-a which means subtracting corresponding elements of a from b.

-

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.