x = 5 and y = 8
Step-by-step explanation:
→ Subtitute the value of y to second equation :
4x - 5y = -20
4x - 5(3x - 7) = -20
4x - 15x + 35 = -20
-11x + 35 = -20
-11x = -20 - 35 → (multiplied by -1)
11x = 20 + 35
11x = 55
x = 5
→ Subtitute x to one of Equation :
For example i take from First Equation…
y = 3x - 7
y = 3(5) - 7
y = 15 - 7
y = 8
∴ So, the value of x = 5 with y = 8
