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

Mathematics

2 answers:

mina [271]2 years ago

7 0

Answer:

Step-by-step explanation:

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

RoseWind [281]2 years ago

4 0

Answer:

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

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