Question

Solve the following pair of simultaneous:


`5x + 2y = - 2 \\ 4x + 3y = 4`
​

Answer 1

x = -2 , y = 4

Explanation:

given:

5x + 2y = -2 *4

4x + 3y = 4 *5

Solving simultaneously,

20x + 8y = -8 ....eq 1

(-) 20x +15y = 20 ...eq 2

.............................................

-7y = -28

y = -28 / -7

y = 4

• if y = 4

using equation 2,

20x +15(4) = 20

20x = -40

x = -2