Mid Unit 2

infinite

-3(x - 14) + 9x = 6x + 42

x=16

-5/6x - 2/3x = -24

x = -27

0.4(5x - 15) = 2.5(x + 3)

infinite

2(3x + 8) = 2x + 16 + 4x

No solution

3 = 5

x = -4

3(4x + 2) = 20x - 9x + 2

Infinite

3/2(2x + 6) = 3x + 9

No solution

3x + 5 = 3(x+5)

infinite

4(2x + 3) = 16x + 3 - 8x + 9

No solution

4(9x + 6) = 36x - 7

x = 0

48x + 43 = 47x + 43

no solution

4x + 24x - 2 = 7(4x + 2)

No solution

6x + 4x - 1 = 2(5x + 4)

infinite

8(2x + 5) = 16x + 40

No solution

8(3x - 6) = 6(4x + 8)

x = 81

8.2(6x - 3) = 7(7x - 1.2)

x = -8

Hilda adds 5 to a number, then multiplies the sum by -2. The result is 6. Write an equation to find the number 'x' and solve.

3

Jaclyn has $120 saved and earns $40 each month in allowance. Pedro has $180 saved and earns $20 a month in allowance. If they both save their entire allowances, how long will it take before Jaclyn and Pedro have saved the same amount of money?

x = 6

Kelsey buys several pairs of uniform pants for $17.95 each, and a sweater for $24. Jeana shops at a different store and buys several pairs of uniform pants for $18.95 each, plus a sweater for 18. Is there a situation where they pay the same amount for their purchases? Write an equation and solve for x.

x = 4

Solve the equation -24 + 12d = 2(d-3) + 22

B

Which equation has infinitely many solutions? A. 12+4x = 6x + 10 - 2x B. 5x + 14 - 4x = 23 + x - 9 C. x+9 - 0.8x = 5.2x + 17 - 8 D. 4x - 2x = 20

x = 7

x + 4x + 4 = 3(2x - 1)