(1) 5x+y=-12 (2) 7x-3y=-30 From (1) one gets y = -12-5x Put into (2) 7x-3y = 7x -3 (-12-5x) = 7x + 36 +15 x = 22x +36=-30 22x = -30-36 = -66 so x = -3 and y=-12-5x = -12-5x-3= 3 The solution is (-3,3)
it equals 72. just do 12 X 6
it equals 70
12 plus 9 equals 21.
12+12
5 plus 25 equals 60. Need to solve for 5 plus 25 equals ?: 2 plus 10 equals 24 is equivalent to 2 × (1 plus 5) equals 2 × (12); and 3 plus 15 equals 36 is equivalent to 3 ×(1 plus 5) equals 3 × (12); thus 5 plus 25 equals ? is equivalent to 5 × (1 plus 5) equals 5 × (12); thus ? = 5 × 12 = 60.
12 + 10 + 11 equals 33
yes. think of 6/12 plus 1/12. that is 7/12!
12 + 12 + 12 + 191 = 227
2.2+10.x+12.x+3 =4+10.x+12.x+3 =22x+7 This is assuming you just needed to simplify. The "." are just multiplication signs.
It is: 12 plus 22 = 34
24