Lets write an equation for each guy's shots and score: 4A + 2B = 18 3A + 3B = 21 To solve we multiply the first equation by -3 and the second by 2: -12A - 6B = -54 6A + 6B = 42 -------------------- -12A + 0 = -12 A = 1 to find B we substitute in the first equation: <span>4A + 2B = 18 </span><span>4(1) + 2B = 18 </span><span>4 + 2B = 18 </span>2B = 14 B = 7 therefore there were given 7 points in an arrow in B