Question

( 1/2 - 0,4-0,375)*2/5 ————––——————=? 2/3*0,75

Answer 1

1/2 - 0,4-0,375=0.5 - 0,4-0,375= -0.275
-0.275*2/5=-0.275*0.4=-0.11
2/3*0.75=2/3*3/4=2/4=0.5
-0.11:0.5=-0.22

Answer 2

Let's solve the expression step by step:

(1/2 - 0.4 - 0.375) * 2/5 = (0.5 - 0.4 - 0.375) * 2/5 = (0.125) * 2/5 = 0.25/5 = 0.05

Now, let's solve the right-hand side:

2/3 * 0.75 = 0.666... * 0.75 (approximately, since 2/3 is a recurring decimal) = 0.5 (approximately)

So, the final result is:

0.05 = 0.5

It seems there might be a calculation error in the expression provided. The left-hand side is 0.05, while the right-hand side is approximately 0.5. They are not equal. Please double-check the original expression or clarify if there's an error in the provided equation.