40 + 9 + 12 = 61
40
-40 + 12 = -28
17 + 13 + 12 + 12 + 6 + 9 = 69.
12+8+10+12+11+9 = 62
15 +26+9+12
12 plus 9 equals 21.
40
28 + 12 = 40
12 minus 63 plus 9 is -42
40 + 9 = 5y + 9 Since 9 is present on both sides of the equation,therefore we can strike it off on both sides,the remaining equation being 40 = 5y or 5y = 40 5y = 40 or y = 40/5 Therefore,y = 9 .
3 + 6 + 9 + 12 = 30
3( 30 + 40 ) - 6 + 9 3 (70) - 6 + 9 210 - 6 + 9 = 213