Question

12=5x+27

-3+x+4=-1+-2

5x1+=4x-1

3(x+-2)=-15

x+3+x+1=4(x+1)

4(x+3)-11(x-7)=4(5x+2)

100a=-1000

Answer 1

12=5x+27
12 - 27 = 5x
-15 = 5x
-15/5 = x
X = - 3

-3+x+4=-1+-2
1+x = - 3
X = - 3-1
X.= - 4

5x1+=4x-1
5x - 4x = - 1
X = - 1

3(x+-2)=-15
3x - 6= - 15
3x = - 15+6
3x = - 9
X = - 9/3
X = - 3

x+3+x+1=4(x+1)
2x + 4 = 4x + 4
4-4 = 4x - 2x
0 = 2x
X = 0/2
X = 0


4(x+3)-11(x-7)=4(5x+2)
4x + 12 - 11x - 77 = 20x + 8
-7x - 65 = 20x + 8
-65 - 8 = 20x + 7x
- 73 = 27x
-73/27 = x

100a=-1000
a = - 1000/100
a = - 10