3(2*5-1)-(7-4*5)=40

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Solution for 3(2*5-1)-(7-4*5)=40 equation: 


Simplifying
3(2 * 5 + -1) + -1(7 + -4 * 5) = 40

Multiply 2 * 5
3(10 + -1) + -1(7 + -4 * 5) = 40

Combine like terms: 10 + -1 = 9
3(9) + -1(7 + -4 * 5) = 40

Multiply 3 * 9
27 + -1(7 + -4 * 5) = 40

Multiply -4 * 5
27 + -1(7 + -20) = 40

Combine like terms: 7 + -20 = -13
27 + -1(-13) = 40

Multiply -1 * -13
27 + 13 = 40

Combine like terms: 27 + 13 = 40
40 = 40

Add '-40' to each side of the equation.
40 + -40 = 40 + -40

Combine like terms: 40 + -40 = 0
0 = 40 + -40

Combine like terms: 40 + -40 = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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