Question

Решите уравнения Срочно!!!! a) -3,6x+ 0,8= -6,4 b) 6- (3x-0,7) = 4.8

Answer 1

а) -3,6х=-6,4-0,8

   -3,6х=-7,2

х=2

б) 3х-0,7=6-4,8

   3х=6-4,8+0,7

   3х=1,9

     х=1,9 : 3=0,6(3)

ИЛИ х=19/30.

Answer 2

a) -3.6x+ 0.8= -6,4; -3.6х=-7.2; х= -72/(-36); х=2

b) 6- (3x-0.7) = 4.8; 6-3х+0.7=4.8;  6.7-4.8=3х

х=1.9/3; х=19/30

Answer 3

a) -3.6x + 0.8 = -6.4

To solve this equation, we'll isolate the variable x by performing algebraic operations step by step.

1. Start by subtracting 0.8 from both sides of the equation: -3.6x = -6.4 - 0.8 -3.6x = -7.2

2. Divide both sides of the equation by -3.6 to solve for x: x = (-7.2) / (-3.6) x = 2

Therefore, the solution to the equation -3.6x + 0.8 = -6.4 is x = 2.

b) 6 - (3x - 0.7) = 4.8

To solve this equation, we'll follow similar steps as in the previous problem:

1. Distribute the negative sign inside the parentheses: 6 - 3x + 0.7 = 4.8

2. Combine like terms on the left side of the equation: 6 + 0.7 - 3x = 4.8 + 0.7 6.7 - 3x = 5.5

3. Subtract 6.7 from both sides of the equation: 6.7 - 3x - 6.7 = 5.5 - 6.7 -3x = -1.2

4. Divide both sides of the equation by -3 to solve for x: x = (-1.2) / (-3) x = 0.4

Therefore, the solution to the equation 6 - (3x - 0.7) = 4.8 is x = 0.4.