9(-7)-(7(4))=n

Solution for 9(-7)-(7(4))=n equation:

Simplifying
9(-7) + -1(7(4)) = n

Multiply 9 * -7
-63 + -1(7(4)) = n

Multiply 7 * 4
-63 + -1(28) = n

Multiply -1 * 28
-63 + -28 = n

Combine like terms: -63 + -28 = -91
-91 = n

Solving
-91 = n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
-91 + -1n = n + -1n

Combine like terms: n + -1n = 0
-91 + -1n = 0

Add '91' to each side of the equation.
-91 + 91 + -1n = 0 + 91

Combine like terms: -91 + 91 = 0
0 + -1n = 0 + 91
-1n = 0 + 91

Combine like terms: 0 + 91 = 91
-1n = 91

Divide each side by '-1'.
n = -91

Simplifying
n = -91