3[5(3+4)+3(3-5)]=A

Solution for 3[5(3+4)+3(3-5)]=A equation:

Simplifying
3[5(3 + 4) + 3(3 + -5)] = A

Combine like terms: 3 + 4 = 7
3[5(7) + 3(3 + -5)] = A

Multiply 5 * 7
3[35 + 3(3 + -5)] = A

Combine like terms: 3 + -5 = -2
3[35 + 3(-2)] = A

Multiply 3 * -2
3[35 + -6] = A

Combine like terms: 35 + -6 = 29
3[29] = A

Multiply 3 * 29
87 = A

Solving
87 = A

Solving for variable 'A'.

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

Add '-1A' to each side of the equation.
87 + -1A = A + -1A

Combine like terms: A + -1A = 0
87 + -1A = 0

Add '-87' to each side of the equation.
87 + -87 + -1A = 0 + -87

Combine like terms: 87 + -87 = 0
0 + -1A = 0 + -87
-1A = 0 + -87

Combine like terms: 0 + -87 = -87
-1A = -87

Divide each side by '-1'.
A = 87

Simplifying
A = 87