JAMB - Mathematics (2007 - No. 19)
Solve the inequalities -3(x - 2) < -2(x + 3)
x > 12
x < 12
x > -12
x < - 12
Giải thích
-3(x-3) < -2(x+3) = -3x + 6 < -2x - 6
-3x + 2x < -6 - 6
-x < - 12
x > -12/-1
x > 12
-3x + 2x < -6 - 6
-x < - 12
x > -12/-1
x > 12