Question

2x - 3y = 5 and x + y = 5 substitution method​

Answer 1

Explanation:

2X - 3Y = 5--------(1)

X - Y = 5 ----------(2)

multiplying equation (2) by 3

3X - 3Y = 15 -----(3)

Adding equation (1) or (3)

2X - 3Y = 5 ------ (1)

3X - 3Y = 15 ------ (3)

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5X = 20

X = 5\ 20

X = 4

substitute the value of X = 4 in equation 2

X - Y = 5

4 - Y = 5

Y = 5 - 4

Y = 1