X y 8 2x 3y July 8, 2019 16 32 64 128 X y 8 2x 3y 1 X y 8 2x 3y 6 X y 8 2x 3y 19 X y 8 2x 3y 1 by substitution method X y 8 2x 3y 1 by elimination method X y 8 2x 3y 20 X y 8 2x 3y 1 substitution X y 8 2x 3y 21 X y 5 2x 3y 8 X y 3 2x 3y 8 X y 9 2x 3y 8 X y 8 0 2x 3y 1 0 X y 8 0 2x 3y 1 0 method of substitution X y 8 0 2x 3y 1 0 answer