Question

How to solve -4{1-2x}-1=7x

Answer 1

Answer:

x = 5

Step-by-step explanation:

$-4(1-2x)-1=7x\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\(-4)(1)+(-4)(-2x)-1=7x\\\\-4+8x-1=7x\qquad\text{combine like terms}\\\\8x+(-4-1)=7x\\\\8x-5=7x\qquad\text{add 5 to both sides}\\\\8x-5+5=7x+5\\\\8x=7x+5\qquad\text{subtract}\ 7x\ \text{from both sides}\\\\8x-7x=7x-7x+5\\\\x=5$

Answer 2

Answer:

5

Step-by-step explanation:

 ((0 -  4 • (1 - 2x)) -  1) -  7x  = 0

Step  2  :

Equation at the end of step  2  :

 x - 5  = 0

Step  3  :

Solving a Single Variable Equation :

3.1      Solve  :    x-5 = 0

Add  5  to both sides of the equation :

                     x = 5

One solution was found :

                  x = 5