Solution: For the shifted term, -4x+x=2-3.
Merge similar projects: -3x=- 1
The coefficient is 1, and x= 1/3.
(2) 0.2x+ 1=- 1.8x
Solution: Shift the term to get: 0.2x+ 1.8x=- 1.
Combining similar projects, we get 2x=- 1.
The coefficient is 1, and x=-?
(3) 1x = 9-2x。
Solution: multiply both sides by 3 at the same time, and remove the denominator:
x=27-2x
Transferred items: x+2x=27
Combining similar projects, we get 3x=27.
The coefficient is 1 and x=9.
(4) 3-2(m-3)=5m+ 1
Solution: Remove the brackets and get
3-2m+6=5m+ 1
Move items, get
-2m-5m= 1-3-6
Merge similar projects to obtain
-7m=-8
The coefficient becomes 1, and we get
m=8/7
(5)3(y- 10)-2(y+ 15)= 0
Solution: Without brackets:
3y-30-2y-30=0
Move items, get
3y-2y=30+30
Merge similar projects to obtain
y=60
(6)2(x-2)-(4x- 1)= 3( 1-x)
Solution: Remove the brackets and get
2x-4-4x+ 1=3-3x
Move items, get
2x-4x+3x=3+4- 1
Merge similar projects to obtain
x=6
Second,
(1) Given that three times the value of x is equal to x-6, find x (also as written above).
Solution: According to the meaning of the problem:
3x=x-6
Move the item and get: 3x-x=-6.
Combining similar projects, we get 2x=-6.
The coefficient is 1 and x=-3.
So x is -3.
(2) Given that y=-2 is the solution of the equation (y+m)-(my-3)=3y, find the value of m..
Solution: substitute y=-2 into the equation about Y (y+m)-(my-3)=3y.
Germany: (-2+m)-(-2m-3)=-6.
Without parentheses, you get:
-2+m+2m+3=-6
To move an item, you must:
m+2m=-6+2-3
Merge similar projects to obtain
3m=-7
The coefficient becomes 1, and we get
m=-7/3
Therefore, the value of m is -7/3.