Question

X (-1/2) x __ = -20
a) 40
b) 10
c) 20
d) -10

Answer 1

To solve the equation x (-1/2) x __ = -20, we multiply x and y and divide both sides by (-1/2)x. The missing number y is 40.

Step-by-step explanation:

To solve the equation x (-1/2) x __ = -20, we need to find the missing number. Let's call the missing number y.

The equation becomes x (-1/2) x y = -20. To simplify, we multiply x and y: (-1/2)xy = -20. To solve for y, we divide both sides by (-1/2)x: y = -20 / (-1/2)x.

Using the rule of division by a fraction, we can rewrite it as y = -20 * (-2/1)x, which simplifies to y = 40x. Therefore, the missing number y is 40.