Question

13) 1=3(х-1)-3-(х+5) 14) 2(х-3)-(х+5) умнножить 6=4 15)5(с-4)-(с-1)умножить(-3)=9 раскрыть скобки и решение найти

Answer 1

Решение вот
но лучше проверь

Answer 2

To solve the given equations, we need to first simplify and expand the expressions, and then solve for the value of the variable 'х' or 'c' in each case. Let's go step by step:

13. 1 = 3(x-1) - 3 - (x+5)

Step 1: Distribute the multiplication. 1 = 3x - 3 - 3 - x - 5

Step 2: Combine like terms. 1 = 3x - x - 11

Step 3: Simplify further. 1 = 2x - 11

Step 4: Isolate 'x' on one side of the equation. Add 11 to both sides: 1 + 11 = 2x 12 = 2x

Step 5: Solve for 'x'. Divide both sides by 2: x = 12 / 2 x = 6

So, the solution for equation 13 is x = 6.

14. 2(x-3) - (x+5) = 6

Step 1: Distribute the multiplication. 2x - 6 - x - 5 = 6

Step 2: Combine like terms. 2x - x - 11 = 6

Step 3: Simplify further. x - 11 = 6

Step 4: Isolate 'x' on one side of the equation. Add 11 to both sides: x - 11 + 11 = 6 + 11 x = 17

So, the solution for equation 14 is x = 17.

15. 5(c-4) - (c-1) * (-3) = 9

Step 1: Distribute the multiplication. 5c - 20 + 3(c-1) = 9

Step 2: Distribute again. 5c - 20 + 3c - 3 = 9

Step 3: Combine like terms. 8c - 23 = 9

Step 4: Isolate 'c' on one side of the equation. Add 23 to both sides: 8c - 23 + 23 = 9 + 23 8c = 32

Step 5: Solve for 'c'. Divide both sides by 8: c = 32 / 8 c = 4

So, the solution for equation 15 is c = 4.

Therefore, the solutions for the given equations are: 13) x = 6

14. x = 17
15. c = 4