Question

solve the system by substitution.
Eq. 1
4x - y = 5
Eq. 2 2x + y = 7​

Answer 1

Answer:

Substitution Method ::::::::

Eq 1 : 4x - y = 5

• 4x - 5 = y

Eq 2 : 2x + y = 7

• 2x + (4x -5) = 7
• 2x + 4x - 5 = 7
• 6x - 5 = 7
• 6x = 7 + 5
• 6x = 12
• x = 12/6
• x = 2
• 4x - 5 = y
• 4(2) - 5 = y
• 8 - 5 = y
• 3 = y

Value of x = 2 And value of y = 3