(7a-15)+(9a+25)=90

Simple and best practice solution for (7a-15)+(9a+25)=90 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 (7a-15)+(9a+25)=90 equation:


Simplifying
(7a + -15) + (9a + 25) = 90

Reorder the terms:
(-15 + 7a) + (9a + 25) = 90

Remove parenthesis around (-15 + 7a)
-15 + 7a + (9a + 25) = 90

Reorder the terms:
-15 + 7a + (25 + 9a) = 90

Remove parenthesis around (25 + 9a)
-15 + 7a + 25 + 9a = 90

Reorder the terms:
-15 + 25 + 7a + 9a = 90

Combine like terms: -15 + 25 = 10
10 + 7a + 9a = 90

Combine like terms: 7a + 9a = 16a
10 + 16a = 90

Solving
10 + 16a = 90

Solving for variable 'a'.

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

Add '-10' to each side of the equation.
10 + -10 + 16a = 90 + -10

Combine like terms: 10 + -10 = 0
0 + 16a = 90 + -10
16a = 90 + -10

Combine like terms: 90 + -10 = 80
16a = 80

Divide each side by '16'.
a = 5

Simplifying
a = 5

See similar equations:

| 1.5(r+2)=-1.5(r+10) | | x+18+3x=-23-3x-29 | | 1.5(r+2)=1.5(r+10) | | -1(8x-6y-7)= | | 42.80=9g+3.65 | | 21+0.35x=20.05 | | -5(-2x)= | | 3-8x/3-7-x/2=x/3 | | 2/3*3.14*3.8*3.8*3.8 | | 32x1/6 | | w+4.14=6.91 | | 5(5y-9)-(8y+8)= | | 32*1/6 | | u+4.11=8.89 | | 64y=9(7y+27) | | -5(5/2) | | (x^2)/(.211-x)=1.8 | | 10x^3-25x^2y^2+10xy^3=0 | | 12n^2+28n+20=4 | | 2ln(2x+8)=14 | | 7-3f=2-5f | | 3a(a-5)= | | (x^(3)*x^(4))^2a/(x^5)^3=x^13 | | 1/4x=1.2 | | 7x=800 | | 3x+5y=85 | | 4q+5=q-7 | | 10x-3x=77 | | x=-3(10)+35 | | (x-4)/4/-.33 | | 4+11-2a=a | | 5-2(8-4m)-3m= |

Equations solver categories