Question

А) 7x-4=x-16б) 3x-(5-x) =11​

Answer 1

А) 7x-4=x-16

7х-х=4-16

6х=-12

х= -2

б) 3x-(5-x) =11

3х-5+х=11

4х=5+11

4х=16

х=4

Answer 2

Let's solve the given equations step by step:

А) $7x - 4 = x - 16$

To solve for $x$, you need to isolate $x$ on one side of the equation.

First, subtract $x$ from both sides: $7x - x - 4 = x - x - 16$ $6x - 4 = -16$

Now, add 4 to both sides: $6x - 4 + 4 = -16 + 4$ $6x = -12$

Finally, divide both sides by 6 to solve for $x$: $\frac{6x}{6} = \frac{-12}{6}$ $x = -2$

So, the solution for equation А) is $x = -2$.

B) $3x - (5 - x) = 11$

First, simplify the expression within the parentheses: $3x - 5 + x = 11$ $4x - 5 = 11$

Now, add 5 to both sides: $4x - 5 + 5 = 11 + 5$ $4x = 16$

Finally, divide both sides by 4 to solve for $x$: $\frac{4x}{4} = \frac{16}{4}$ $x = 4$

So, the solution for equation B) is $x = 4$.