英语作文解方程练习题.pdf

英语作文解方程练习题

解方程是数学中的重要内容之一，也是英语学习过程中的一项必修

内容。通过解方程，我们可以培养我们的逻辑思维能力和解决问题的

能力。下面是一些英语作文解方程练习题，帮助你进一步掌握这一技

巧。

Exercise1:

Solvethefollowingequationforx:

2x+4=10

Solution:

Tosolvetheequation,weisolatethevariablex.

Step1:Subtract4frombothsidesoftheequation:

2x=10-4

2x=6

Step2:Dividebothsidesoftheequationby2:

x=6/2

x=3

Therefore,thesolutiontotheequationisx=3.

Exercise2:

Solvethefollowingequationforx:

3(x+5)=2(x-1)+7

Solution:

Tosolvetheequation,weusethedistributivepropertyandsimplifyboth

sidesoftheequation.

Step1:Distributethe3ontheleftsideandthe2ontherightsideofthe

equation:

3x+15=2x-2+7

Step2:Combineliketermsonbothsidesoftheequation:

3x+15=2x+5

Step3:Subtract2xfrombothsidesoftheequation:

3x-2x+15=2x-2x+5

x+15=5

Step4:Subtract15frombothsidesoftheequation:

x+15-15=5-15

x=-10

Therefore,thesolutiontotheequationisx=-10.

Exercise3:

Solvethefollowingequationfory:

5y-3(2y+1)=4+2(3y-1)

Solution:

Tosolvetheequation,weusethedistributivepropertyandsimplifyboth

sidesoftheequation.

Step1:Distributethe-3ontheleftsideandthe2ontherightsideofthe

equation:

5y-6y-3=4+6y-2

Step2:Combineliketermsonbothsidesoftheequation:

-1y-3=4+6y-2

Step3:Combineliketermsonbothsidesoftheequation:

-1y-3=6y+2

Step4:Add1ytobothsidesoftheequation:

-1y+1y-3=6y+1y+2

-3=7y+2

Step5:Subtract2frombothsidesoftheequation:

-3-2=7y+2-2

-5=7y

Step6:Dividebothsidesoftheequationby7:

-5/7=7y/7

-5/7=y

Therefore,thesolutiontotheequation