Question

В) (х + 3,5) – 4,8 = 2,4 г) (7,1 – х) + 3,9 = 4,5.

Answer 1

Х+3.5=2.4+4.8
х+3.5=7.2
х=7.2-3.5
х=3.7

Answer 2

7,1-х=4.5-3.9
7.1-х=0.6
х=7.1-0.6

Answer 3

В) (х + 3.5) - 4.8 = 2.4

To solve this equation, let's isolate the variable x step by step:

Step 1: Remove the parentheses x + 3.5 - 4.8 = 2.4

Step 2: Combine like terms x - 1.3 = 2.4

Step 3: Move -1.3 to the right side of the equation by adding 1.3 to both sides x = 2.4 + 1.3

Step 4: Simplify the right side x = 3.7

Therefore, the solution to the equation is x = 3.7.

г) (7.1 - х) + 3.9 = 4.5

Let's solve this equation using similar steps:

Step 1: Remove the parentheses 7.1 - x + 3.9 = 4.5

Step 2: Combine like terms 11 - x = 4.5

Step 3: Move 11 to the right side of the equation by subtracting 11 from both sides 11 - 11 - x = 4.5 - 11

Step 4: Simplify the left and right sides -x = -6.5

Step 5: Multiply both sides by -1 to solve for x x = -6.5 * (-1)

Step 6: Simplify the right side x = 6.5

Therefore, the solution to the equation is x = 6.5.