Find three consecutive even integers if their sum, decreased by the third, equals -22.

-12,-10,-8

Three consecutive even integers:
x, x + 2, x + 4

x + x + 2 + x + 4 - (x + 4) = -22
2x + 2 = -22
2x = -24
x = -12

X = -12
X + 2 = -10
X + 4 = -8

On monday,mrs.wise bought 3 lbs of apples at $4per lb= 4*3=$12on tuesday ,20%off and she buy 5 lbs of apples = $4-20%=3.20*5lb=$16example: other wise when she buy 5lbs on monday she have to spend 4*5=20