Which expression is equivalent to (4x + 7y) + 5z? a) 4x + (7y + 5z) b) 4x(7y + 5z) c) 11xy + 5z d) 16xyz

(A) 4x+(7y+5z).

Step-by-step explanation:  The given expression is (4x+7y)+5z.

For the set of real numbers, we have the following associative property-

If a, b and c are any three real numbers, then  

Applying this associative property of real numbers, we can write

So, options (B), (C) and (D) are incorrect.

Thus, the correct option is (A).

use substitution to solve each system of equations. y = x + 5 3x + y = 25 62/87,21 y = x + 5 3x + y = 25 substitute x + 5 for y in the second equation. substitute the solution for x into either equation to find y. the solution is (5, 10)

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step-by-step explanation: