One-Step Equations
-20x = 37
-1.85
5Y - 10 = 20
Y = 6
4x + 7 < 27
X < 5...4,3,2
X/7 = -50
-350
-5 + 14x = 23
X = 2
8B - 4 > 26
B > 3.75...4,5,6
-2x = 24
x = 26
Please explain what was done incorrectly in at least two-sentences while correctly using the terms variable and constant or coefficient. Give the correct answer.
Various, must explain that the incorrect operation was used on the coefficient.
Correct answer is X = -12
3(4x + 5) = 51
X = 3
-3x + 12 < 15
X > -1...2,3,4
4x + 10 = 8x + 24
X = -3.5
2/3x = 45
x = 67.5
4V - 8 + 13v - 7 = 19
V = 2
-4x + 12 + 2x < 18
X > -3...-2,-1,0
Tommy wants to make at least $350 mowing lawns today. He made $224 so far, If he chargers $21.5 per lawn, write and solve an inequality for this situation.
21.5x + 224 > 350 (Greater than or equal to)
X > 5.86
-3(12x + 7) - 15x = 2x + 3(2x - 7)
X = 0
-7/11 = 43.8
X = -68.83
-11x + 5 + 4x -2 + 7x = 20
No Solutions
-3/4(15x + 7) < 37
X > 3.755(R)...4,5,6
Joe needs to load at most 3500 pounds of material onto his truck. He has already loaded negative 1300 pounds (I know that makes zero sense) onto his truck. if Each pallet he is loading weighs 140 pounds, write and solve and inequality for this situation.
140x - 1300 < 3500 (Less than or equal to)
X < 34.29
30x + 1/2(16x - 10) = 3x - 10 + 6(2x + 1/2) - 4
X = -0.26