Question

3 x minus 4 Y is equal to 10 2 x minus 2 Y is equal to 2​

Answer 1

Answer:

$3x - 4y = 10 - - - - > 1 \\ 2x - 2y = 2 \: - - - - > 2 \\ we \: can \: solve \: this \: with \: elimination \: method \: \\ multiply \: eq1 \: with \: 2 \: and \: eq2 \: with \: 3 \\ 2(3x - 4y) = 2(10) \\ 3(2x - 2y) = 3(2) \\ = 6x - 8y = 20 - - > 1 \\ = 6x - 6y = 6 \: - - - > 2 \: \: \: \: \: (subtract \: 1 \: from \: 2) \\ = 0x - 2y = 14 \\ 2y = 14 \\ y = -7 \\ substitute \: in \: any \: one \: eq \\ 2x - 2(-7) = 2 \\ 2x = -12 \\ x = -6$