Need answers . Please help solve .
2 answers:
2) -4
3) -2
4) 2
5) -1
6) no solution
7) 3.5
8) -1
9) -6
Answers and Steps
2. -5x+4=-2x+16
-5x+2x+4=-2x+2x+16
-3x+4=16
Move +4 to the other side. Sign changes from +4 to -4.
-3x+4-4=16-4
-3x=12
Divide by -3
-3x/3=12/-3
x=-4
3. 3x+15-9=2(x+2)
Multiply the bracket by 2
3x+6=2x+4
3x-2x+6=2x-2x+4
x+6=4
x+6-6=4-6
x=-2
4. -2x-3=4x-15
-2x-4x-3=4x-4x-15
-6x-3=-15
-6x-3+3=-15+3
-6x=-12
Divide by -6
-6x/-6=-12/-6
x=2
5. 2x-3=-(4x+9)
Pretend that there is a -1 in front of the bracket
2x-3=-1(4x+9)
2x-3=-4x-9
2x+4x-3=-4x+4x-9
6x-3=-9
6x-3+3=-9+3
6x=-6
6x/6=-6/6
x=-1
6. 4(x+3)=3x+2+x
4x+3=3x+x+2
4x+3=4x+2
4x-4x+3-3=2-3
0=-1
No solution
7. 20-6x=4x-15
20+15-6x=4x-15+15
35-6x=4x
35-6x+6x=4x+6x
35=10x
35/10=10x/10
x=7/2 - divide by 5 .
7/2 as a decimal = 3.5
x=3.5
8. 5x-9=-3x-12+5x
5x-9=-3x+5x-12
5x+3x-9=-3x+3x+5x-12
8x-9=5x-12
8x-5x-9=5x-5x-12
3x-9=-12
3x-9+9=-12+9
3x=-3
3x/3=-3/3
x=-1
9. 2+2x-5=5(x+3)
2+2x-5=5x+15
-3+2x=5x+15
2x-5x-3+3=15+3
-3x=18
-3x/3=18/-3
x=-6
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