Question

Помогите решить 3 примера.1) (-3/5 × 0,8 - 13/25) × 0,72) (-5,8 + 3,6) × (-1,2) - 3,043) -6,03 × 2,1 - (-0,14) × (-0,05)

Answer 1

1) (-0.6*0.8-0.52)*0.7
(-0.48-0.52)0.7
(-1) 0.7
-0.7

2) (-2.2)*(-1.2)-3.04
2.64-3.04
-0.4

3) -12.663+0.14*(-0.05)
-12.663-0.007
-12.67

Answer 2

1) (-3/5 × 0.8 - 13/25) × 0.72 First, let's simplify the expression inside the parentheses: (-3/5 × 0.8 - 13/25) = (-0.48 - 0.52) = -1 Now we can multiply by 0.72: -1 × 0.72 = -0.72

2) (-5.8 + 3.6) × (-1.2) - 3.04 First, let's simplify the expression inside the parentheses: (-5.8 + 3.6) = -2.2 Now we can multiply by -1.2 and subtract 3.04: -2.2 × (-1.2) - 3.04 = 2.64 - 3.04 = -0.4

3) -6.03 × 2.1 - (-0.14) × (-0.05) First, let's multiply -6.03 by 2.1 and then multiply -0.14 by -0.05: -6.03 × 2.1 = -12.663 -0.14 × -0.05 = 0.007 Now we can subtract the second result from the first: -12.663 - 0.007 = -12.67

So the solutions are: 1) -0.72 2) -0.4 3) -12.67