Solve for a. ab + c = d

Mathematics

2 answers:

nexus9112 [7]4 years ago

7 0

Answer:

a = ( d-c)/b

Step-by-step explanation:

to solve for a in this expression , ab + c = d , you are going to try and express a in terms of b,c and d.

to do that

ab + c = d

ab = d-c

divide both sides by the coefficient of a which is b

ab/b = d - c/b

a = ( d-c)/b

mr_godi [17]4 years ago

5 0

Answer:

a = (d-c)/b

Step-by-step explanation:

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4 years ago

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Stella [2.4K]

Answer:

$\large\boxed{x=\dfrac{23}{33}}$

Step-by-step explanation:

$\text{Let}\ x=0.\overline{69}\\\\x=0.696969...\qquad\text{multiply both sides by 100}\\\\100x=69.696969...\qquad\text{subtract}\ x\ \text{from}\ 100x:\\\\100x-x=69.696969...-0.696969...\\\\99x=69\qquad\text{divide both sides by 99}\\\\x=\dfrac{69}{99}\\\\x=\dfrac{23}{33}$