jmenzie2024 jmenzie2024

17-06-2021
Mathematics

contestada

4x=3y+23
4y+3x=-19
solve by substitution. No files pls

Respuesta :

17-06-2021

Answer:

x = ⁷/₅

y = ⁻²⁹/₅

Step-by-step explanation:

4x = 3y + 23 (×3)

12x = 9y + 69

4y + 3x = -19

3x = -4y - 19 (×4)

12x = -16y - 76

∴ 9y + 69 = -16y - 76

25y = -145

y = ⁻²⁹/₅

12x = 9(⁻²⁹/₅) + 69

12x = 69 - ²⁶¹/₅

12x = ⁸⁴/₅

x = ⁷/₅

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