Solve the following simultaneous equations: x + 2y + 9 = 0, 3x + 4y + 17 = 0

Question

KnowledgeBoat · Accepted Answer

Given, Equations : x + 2y + 9 = 0, 3x + 4y + 17 = 0 ⇒ x + 2y + 9 = 0 ⇒ x = -9 - 2y ....(1) Substituting value of x from equation (1) in 3x + 4y + 17 = 0, we get : ⇒ 3(-9 - 2y) + 4y + 17 = 0 ⇒ -27 - 6y + 4y + 17 = 0 ⇒ -10 - 2y = 0 ⇒ -2y = 10 ⇒ y = . Substituting value of y in equation (1), we get : ⇒ x = -9 - 2y ⇒ x = -9 - 2(-5) ⇒ x = -9 + 10 ⇒ x = 1. Hence, x = 1, y = -5.

Mathematics

Solve the following simultaneous equations:
x + 2y + 9 = 0, 3x + 4y + 17 = 0

Linear Equations

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Mathematics

Solve the following simultaneous equations:x + 2y + 9 = 0, 3x + 4y + 17 = 0

Linear Equations

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x + 2y = 1, 3x - y = 17

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