mariab1430 mariab1430

11-10-2019
Mathematics

contestada

Solve each system by substitution.
5) 5x + 3y =-23
y = 4

Respuesta :

jimrgrant1 jimrgrant1

11-10-2019

Answer:

(- 7, 4 )

Step-by-step explanation:

Given the 2 equations

5x + 3y = - 23 → (1)

y = 4 → (2)

Substitute y = 4 directly into (1_

5x + 3(4) = - 23, that is

5x + 12 = - 23 ( subtract 12 from both sides )

5x = - 35 ( divide both sides by 5 )

x = - 7

Solution is (- 7, 4 )

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