<span>y=x-4 y=-x+6 --------------------- Substitute x - 4 for y in </span>y=-x+6 x-4=-x+6<span> -------------------------------- Add X on each side </span><span>x-4+x</span>=-<span>x+6+x </span>2x - 4 = 6 -------------------------------------- Add 4 on each side <span>2x-4+4</span>=<span>6+4 </span>2x = 10 ------------------------------------------------ Divide by 2 on each side 2x ÷ 2 = 10 ÷ 2 x = 5 Now we have X ================================================================ To find Y we substitute 5 for x in y=<span>x-<span>4 </span></span>y = 5 - 4 y = 1 ----------------------------------------------------- Your answers are Y = 1 and X = 5