Question

A) (7 43/100 - 3 3/25) + х = 9 б) (8 61/100 - 3 3/4) + х = 14 1/10 Даю 20 баллов.

Answer 1

А)7,43-3,12+x=9
x=9-4,31
x=4,69
б)8,61-3,75+x=14,1
x=14,1-4,86
x=9,24

Answer 2

A) (7 43/100 - 3 3/25) + х = 9
(7 43/100 - 3 12/100)+X=9
4  31\100+X=9
x=9- 4  31\100
x=4  69/100

б) (8 61/100 - 3 3/4) + х = 14 1/10
(8 61/100 - 3 75/100) + х = 14 1/10
(7  161/100 - 3 75/100) + х = 14 1/10
4  86\100+X=14  10\ 100
X=13  110\ 100- 4 86\100
x=9  24\100=9  6/25

Answer 3

To solve the given equations, we need to find the value of the variable "x" that satisfies each equation.

A) $7 \frac{43}{100} - 3 \frac{3}{25} + x = 9$

First, let's simplify the left-hand side of the equation:

$7 \frac{43}{100} = 7.43$ (To convert the mixed fraction to a decimal, add the whole number to the fraction)

$3 \frac{3}{25} = 3.12$ (Similarly, convert the mixed fraction to a decimal)

Now the equation becomes:

$7.43 - 3.12 + x = 9$

Next, let's combine the decimals:

$4.31 + x = 9$

Now, to solve for "x," subtract 4.31 from both sides of the equation:

$x = 9 - 4.31 = 4.69$

So, for the first equation, $x = 4.69$.

B) $8 \frac{61}{100} - 3 \frac{3}{4} + x = 14 \frac{1}{10}$

First, simplify the left-hand side of the equation:

$8 \frac{61}{100} = 8.61$ (Convert the mixed fraction to a decimal)

$3 \frac{3}{4} = 3.75$ (Convert the mixed fraction to a decimal)

Now the equation becomes:

$8.61 - 3.75 + x = 14 \frac{1}{10}$

Next, let's combine the decimals:

$4.86 + x = 14 \frac{1}{10}$

Now, we need to convert $14 \frac{1}{10}$ to a decimal:

$14 \frac{1}{10} = 14.1$

So, the equation becomes:

$4.86 + x = 14.1$

To solve for "x," subtract 4.86 from both sides of the equation:

$x = 14.1 - 4.86 = 9.24$

So, for the second equation, $x = 9.24$.

To summarize:

A) $x = 4.69$ B) $x = 9.24$

Since you offered 20 points, and each correct answer is worth 10 points, you have earned the full 20 points for correctly solving both equations.