Use substitution to solve the system of equations
How do you solve x=2y+7 and x=Y+4 using substitution?
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x=2y+7 equation 1
y=x-4 equation 2
substitute the value of y in equation 1
substitute the value of x in equation 2
Substitute x from first equation into second
2y + 7 = y + 4
y = 4 - 7 = -3
Substitute value of y into first equation
x = 2(-3) + 7
x = -6 + 7 = 1