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Prealgebra

Practice Test

PrealgebraPractice Test

Practice Test

325.

Determine whether each number is a solution to the equation.
 3x+5=23.3x+5=23.

  1. ⓐ 6 6
  2. ⓑ 23 5 23 5

In the following exercises, solve each equation.

326.

n − 18 = 31 n − 18 = 31

327.

9 c = 144 9 c = 144

328.

4 y − 8 = 16 4 y − 8 = 16

329.

−8 x − 15 + 9 x − 1 = −21 −8 x − 15 + 9 x − 1 = −21

330.

−15 a = 120 −15 a = 120

331.

2 3 x = 6 2 3 x = 6

332.

x + 3.8 = 8.2 x + 3.8 = 8.2

333.

10 y = −5 y + 60 10 y = −5 y + 60

334.

8 n + 2 = 6 n + 12 8 n + 2 = 6 n + 12

335.

9 m − 2 − 4 m + m = 42 − 8 9 m − 2 − 4 m + m = 42 − 8

336.

−5 ( 2 x + 1 ) = 45 −5 ( 2 x + 1 ) = 45

337.

− ( d + 9 ) = 23 − ( d + 9 ) = 23

338.

1 3 ( 6 m + 21 ) = m − 7 1 3 ( 6 m + 21 ) = m − 7

339.

2 ( 6 x + 5 ) − 8 = −22 2 ( 6 x + 5 ) − 8 = −22

340.

8 ( 3 a + 5 ) − 7 ( 4 a − 3 ) = 20 − 3 a 8 ( 3 a + 5 ) − 7 ( 4 a − 3 ) = 20 − 3 a

341.

1 4 p + 1 3 = 1 2 1 4 p + 1 3 = 1 2

342.

0.1 d + 0.25 ( d + 8 ) = 4.1 0.1 d + 0.25 ( d + 8 ) = 4.1

343.

Translate and solve: The difference of twice xx and 44 is 16.16.

344.

Samuel paid $25.82$25.82 for gas this week, which was $3.47$3.47 less than he paid last week. How much did he pay last week?

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