Question

0,3-(7,1+х)=-1.5 x+11-(2x-5)=0 9.4-(1.6--y)=11.8 7(1.2x-5)+18-x=5.2 Заранее большое спасибо!!!!!

Answer 1

1) -(7,1 + х) = -1,5 - 0,3
    7,1 + х = 1,8
    х = 1,8 - 7,1
    х = - 5,3
2) х+11-2х+5 = 0
    -х+16 = 0
    -х=-16
     х = 16
3) 9,4-1,6+у=11,8
    у=11,8-7,8
    у=4
4)8,4х-35+18-х=5,2
   7,4х-1,7=5,2
   7,4х=5,2+17
7,4х=22,2
х=22,2÷7,4
х=3

Answer 2

Solving the Equation System

To solve the given equation system, we'll start by simplifying and solving each equation step by step.

1. Simplify and Solve the First Equation: - Start by simplifying the equation: 0.3 - (7.1 + x) = -1.5 + x - Then solve for x.

   0.3 - (7.1 + x) = -1.5 + x
   0.3 - 7.1 - x = -1.5 + x
   -6.8 - x = -1.5 + x
   -6.8 + 1.5 = x + x
   -5.3 = 2x
   x = -5.3 / 2
   x = -2.65
   

2. Simplify and Solve the Second Equation: - Next, simplify the equation: 11 - (2x - 5) = 0 + 9.4 - Then solve for x.

   11 - (2x - 5) = 0 + 9.4
   11 - 2x + 5 = 9.4
   16 - 2x = 9.4
   -2x = 9.4 - 16
   -2x = -6.6
   x = -6.6 / -2
   x = 3.3
   

3. Simplify and Solve the Third Equation: - Now, simplify the equation: 1.6 - (-y) = 11.8 - Then solve for y.

   1.6 - (-y) = 11.8
   1.6 + y = 11.8
   y = 11.8 - 1.6
   y = 10.2
   

4. Simplify and Solve the Fourth Equation: - Finally, simplify the equation: 18 - x = 5.2 - Then solve for x.

   18 - x = 5.2
   -x = 5.2 - 18
   -x = -12.8
   x = -12.8
   

Results:

- The solutions to the given equation system are: - x = -2.65 - x = 3.3 - y = 10.2 - x = -12.8

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