Question

1)-4,81*(-2,3)-(-2,3)*5,19= ( -3/8+2 1/16)*16= -3/8 *(-6,81)+(3,19)*(-3/8)= (-5/12+3/7)*8,4= 2)(x+4)*(x-3)=0 (3/8y-9/16)*(y-0,8)=0

Answer 1

1) -2,3*(-4,81-5,19)=-2,3*(-10)=23
2) (2 1/16-6/16)*16=1 11/16*16= 27/16*16=27
3) -3/8*(-6,81+3,19)=-3/8*(-3,62)=3*181/8*50= 543/400=1 143/400
4) (36/84-35/84)*8,4=1/84*84/10=1/10=0,1



(х+4)(х-3)=0
х+4=0 или х-3=0
х=-4 х=3


(3/8у-9/16)(у-0,8)=0
3/8у-9/16=0 или у-0,8=0
3/8 у=9/16 у=0,8
у=9*8/3*16
у=3/2
у=1,5

Answer 2

1. Let's simplify the expression step by step:

-4,81*(-2,3) = 11.063 (-2,3)5,19 = -12.063 So, -4,81(-2,3)-(-2,3)*5,19 = 11.063 - (-12.063) = 23.126

Next, we can simplify the expression using fractions:

-3/8 + 2 1/16 = -3/8 + 33/16 = -6/16 + 33/16 = 27/16

Multiplying by 16, we get:

-3/8 + 2 1/16)16 = 27/1616 = 27

Now, we can continue with:

-3/8*(-6,81) = 2.548125 (3,19)(-3/8) = -1.198125 So, (-3/8(-6,81))+(3,19)*(-3/8) = 1.35

Finally, we have:

(-5/12+3/7)8,4 = -0.0758.4 = -0.63

Therefore, the solution to the equation is:

-4,81*(-2,3)-(-2,3)*5,19= ( -3/8+2 1/16)*16= -3/8 (-6,81)+(3,19)(-3/8)= (-5/12+3/7)*8,4= -0.63

2. To find the solutions to the equation (x+4)*(x-3)=0, we need to set each factor equal to zero and solve for x:

x+4=0 or x-3=0

x=-4 or x=3

Therefore, the solutions to the equation are x=-4 and x=3.

To find the solutions to the equation (3/8y-9/16)*(y-0,8)=0, we need to set each factor equal to zero and solve for y:

3/8y-9/16=0 or y-0,8=0

3/8y=9/16 or y=0,8

Multiplying both sides of the first equation by 16, we get:

6y=9

Dividing both sides by 6, we get:

y=3/2

Therefore, the solutions to the equation are y=3/2 and y=0,8.