3x 4y 10 2x 2y 2 by substitution method July 8, 2019 16 32 64 128 3x 4y 10 and 2x 2y 2 by substitution method teachoo 3x 4y 10 2x 2y 2 solve by substitution method Ii 3x 4y 10 and 2x 2y 2 by substitution method 3x 4y 10 and 2x 2y 2 by elimination method and substitution method