7+2[a-3]=-9

Simple and best practice solution for 7+2[a-3]=-9 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 7+2[a-3]=-9 equation:


Simplifying
7 + 2[a + -3] = -9

Reorder the terms:
7 + 2[-3 + a] = -9
7 + [-3 * 2 + a * 2] = -9
7 + [-6 + 2a] = -9

Combine like terms: 7 + -6 = 1
1 + 2a = -9

Solving
1 + 2a = -9

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-1' to each side of the equation.
1 + -1 + 2a = -9 + -1

Combine like terms: 1 + -1 = 0
0 + 2a = -9 + -1
2a = -9 + -1

Combine like terms: -9 + -1 = -10
2a = -10

Divide each side by '2'.
a = -5

Simplifying
a = -5

See similar equations:

| -8a+15=-105 | | 4x+2y=13.50 | | H-(-7)=12 | | 4x+2x=13.50 | | -6(a+8)+6(1-8)=-78 | | 7x-5=5x+8 | | -7x-4-4x=9x+4x | | (x^2+10+25)-5=25 | | 2[a-4]+15=13 | | 1x^2=0 | | 5x+2x-5=30 | | 10+3x-4=18 | | 4[2a+2]-17=15 | | .2(y+3)+3=.1(7y-4)-5 | | 6+6x=1+x | | 5x-9y-11x-y= | | 5[3x+12]=-15 | | -15=-20y | | 3[t-12]=27 | | -4x+3[2x-5]=31 | | 62=3(-6+6a)+4(a-2) | | h=-16t^2+31t+s | | 0=2y+8 | | 5[b+4]-6b=-24 | | 87=-3x+5 | | 3x*x+3x=7 | | -8x+7=7x+11 | | 18=-4a | | 10u-4u+9t-2t= | | -w+4[w+3]=-12 | | 60-2(2x-2)=4(x+2)+6x | | (x-1)(6x+2)=(2x+8)(3x-6) |

Equations solver categories