Question

1. Solve each of the following systems of equations by the method
of substitutions
() 5x + 8y = 9, 2x + 3y = 4
(ii) 7x + 1ly - 3 = 0, 8x + y - 15 = 0
(iii) x + 2y = -1, 2x - 3y = 12

(u) x - y = 0.9,
2.1 + y)
(vi) x + y = a +b, ax - by = q(square) – b(square)​

Answer 1

Answer:

1. Solve each of the following systems of equations by the method

of substitutions

() 5x + 8y = 9, 2x + 3y = 4

(ii) 7x + 1ly - 3 = 0, 8x + y - 15 = 0

(iii) x + 2y = -1, 2x - 3y = 12

(u) x - y = 0.9,

2.1 + y)

(vi) x + y = a +b, ax - by = q(square) – b(square)