explain: 3x-y=12
4x-5y=16
it is linear equations using substitution method
y = 3x - 12, so
4x - 5(3x - 12) = 16
you can now solve for x.
4x-5y=16
it is linear equations using substitution method
4x - 5(3x - 12) = 16
you can now solve for x.