Question

2x+3y -7 and 3x-4y-2
substitution methods​

Answer 1

Answer:

x = -2 and y = 25 / -17

Step-by-step explanation:

2x = -7 -3y

x = -7 -3y / 2 equation 1

putting value of x on 3x -4y -2

3× -7 -3y / 2 -4y - 2

-21 -9y / 2 - 4y = 2

taking lcm

-21 - 9y -8y /2 = 2

-21 -17y = 4

-17y = 25

y = 25 / -17

putting value of y on equation 1

x = -7 -3 × 25/ -17 /2

× = -7 + 75/17 / 2

x = -139 + 75 / 17 / 2

x = -64/17 / 2

x = -4 / 2

x = - 2