Question

a) 6x/7 - 2 = 4

b) -7 + 7(x - 3) = 0

c) -49 = 7(x + 1)


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Answer 1

Answer:

Step-by-step explanation:

− 4 9 = 7 ( + 1 )

− 4 9 = 7 + 7

−49=7x+7

− 4 9 − 7 = 7 + 7 − 7

− 5 6 = 7

= − 8

Answer 2

To find :

$\bold{ 1. \: \frac{6x}{7} - 2 = 4} \\ \bold{2. \: - 7 + 7(x - 3) = 0} \\ \bold{3. \: - 49 = 7(x + 1)}$

Solution :

$\bold{1. \: \frac{6x}{7} - 2 = 4} \\ \implies \bold{ \frac{6x}{7} = 4 + 2} \\ \implies \bold{6x = 7 \times 6} \\ \implies \bold { x = \cancel{ \frac{42 }{6 }} \: \: \: 7} \\ \implies \boxed{ \boxed{ \bold { x \: \: = \: \: 7}}}$

$\bold{2. \: - 7 + 7(x - 3) = 0} \\ \implies \bold{ 7(x - 3) = 7} \\ \implies \bold{x + 3 = \cancel{ \frac{7}{7} }} \\ \implies \bold{ x = 1 - 3} \\ \implies \boxed{ \boxed{ \bold{ x \: = \: - 2}}}$

$\bold{3. \: - 49 = 7(x + 1)} \\ \implies \bold{ x + 1 = \cancel{ \frac{ - 49}{7} }} \\ \implies \bold{x = - 7 - 1} \\ \implies \boxed{ \boxed{ \bold{ x = - 8}}}$