Evaluate 8 - 4.7y - x, when y = -1 and x = 2.
A. -10.7
B. -9.7
C. 9.7
D. 10.7

The value of the equation is 10.7

Step-by-step explanation:

⇒ 8 - 4.7y - x = 8 - 4.7 × -1 - 2 = 8 + 4.7 - 2

                     = 12.7 - 2 = 10.7

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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