Five sevenths times seven thirds
1 answer:
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Answer:
Given: , y =6
To prove: x =7
On substituting the value of y =6 in the equation 7y = 8x -14 to solve for x.
or
42 = 8x -14 ......[1]
Addition Property of equality states that you add the same number to both sides of an equation.
Add 14 to both sides in equation [1];
42+14 =8x -14+14
Simplify:
56 = 8x
or
8x =56 ......[2]
Division Property of equality states that you divide the same number to both sides of an equation.
Divide by 8 to both sides of an equation [2];
Simplify:
x =7 Hence proved!
A two Column proof:
Statement Reason
1. 7y = 8x -14 Given
y= 6
2. 7(6) = 8x -14 Substitution property
3. 42+14 = 8x Addition property of equality
4. 56 =8x Simplify
5. x =7 Division Property of equality
We will have that for the previous year, he had in the account:
For the year previous to that one, he had:
For the previous year to that, he had:
For the year previous to that one, he had:
For the second year that the money was in the account, there was:
And the orinial ammount of money that was in the account was:
From this, we know that Jhon had originally $1400.37 in the bank account.