Marina is solving the equation below by using the multiplicative inverse, or the reciprocal. One-fifth (x minus 2) = 20 By which
number should Marina multiply both sides of the equation as the first step in solving it?
2 answers:
Answer:
Step-by-step explanation:
Given the equation:
1/5 × (x - 2) = 20
First step to solving the equation is
By multiplying both sides by the value of 5.
That will give,
x - 2 = 100
x = 100 + 2
= 102
Answer:
The number is 5
Step-by-step explanation:
Using reciprocal method
1/5(x-2)=20
We'll multiply the both sides by the reciprocal of 1/5 which is 5
(1/5)*5(x-2)= 20*5
1(x-2)= 100
X-2 = 100
X= 100+2
X = 102
But note that we multiplied the equation by 5 which is reciprocal of 1/5 as the first step.
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