Question

Solve the simultaneous equations:
2x − y = 3
3x + 2y = 8

Answer 1

Step-by-step explanation:

answer x=2,y=1......

Answer 2

Answer:

[ multiply (1) & (2) by exchanging the coefficients of y ]

2x − y = 3 ------(1). × 2

3x + 2y = 8-----------(2). × 1

4x - 2y = 6 ----------(3)

3x + 2y = 8----------(4)

By adding (3) & (4)

4x - 2y = 6

3x + 2y = 8

__________

7x +0 = 14

7x = 14

x=14/7

x = 2

Substitute the value of x in (1)

2x − y = 3

2(2) − y = 3

4-y = 3

y = 4-3

y = 1