Prealgebra 2e

# Practice Test

Prealgebra 2ePractice Test

### Practice Test

325.

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

1. $66$
2. $235235$

In the following exercises, solve each equation.

326.

$n−18=31n−18=31$

327.

$9c=1449c=144$

328.

$4y−8=164y−8=16$

329.

$−8x−15+9x−1=−21−8x−15+9x−1=−21$

330.

$−15a=120−15a=120$

331.

$23x=623x=6$

332.

$x+3.8=8.2x+3.8=8.2$

333.

$10y=−5y+6010y=−5y+60$

334.

$8n+2=6n+128n+2=6n+12$

335.

$9m−2−4m+m=42−89m−2−4m+m=42−8$

336.

$−5(2x+1)=45−5(2x+1)=45$

337.

$−(d+9)=23−(d+9)=23$

338.

$13(6m+21)=m−713(6m+21)=m−7$

339.

$2(6x+5)−8=−222(6x+5)−8=−22$

340.

$8(3a+5)−7(4a−3)=20−3a8(3a+5)−7(4a−3)=20−3a$

341.

$14p+13=1214p+13=12$

342.

$0.1d+0.25(d+8)=4.10.1d+0.25(d+8)=4.1$

343.

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

344.

Samuel paid $25.8225.82$ for gas this week, which was $3.473.47$ less than he paid last week. How much did he pay last week?