1 + 3 - (8 * 334 * 123) = x

x = ?

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

Simplify (4x^2 - 8xy + 2y^2) - (9x^2 - 4xy - 7y^2) a. -5x^2 + 4xy + 9y^2 b. -5x^2 - 4xy + 9y^2 c. -5x^2 + 12xy + 4y^2 d. -5x^2 - 4xy - 5y^2

3.4a=57.8 what is the the value of a