Question

80-(35‚6+x)=11‚5; (62‚4+y)-13‚4=91; 9‚15+(x-8‚5)=21‚77;

Answer 1

Ответ:
1)80-(35,6+x)=11,5
35,6+x=80-11,5
35,6+x=68,5
x=68,5-35,6
x=32,9
2)(62,4+y)-13,4=91
62,4+y=91+13,4
62,4+y=104,4
y=104,4-62,4
y=42
3)9,15+(x-8,5)=21,77
x-8,5=21,77-9,15
x-8,5=12,62
x=12,62+8,5
x=21,12
Пошаговое объяснение:

Answer 2

80-(35,6+x)=11,5
80-35,6-x=11,5
80-35,6-11,5=x
32,9=x
x=32,9
Ответ: 32,9
(62,4+y)-13,4=91
62,4+y-13,4=91
y=91-62,4+13,4
y=42
Ответ: 42
9,15+(x-8,5)=21,77
9,15+x-8,5=21,77
x=21,77-9,15+8,5
x=21,12
Ответ: 21,12

Answer 3

It looks like you have a system of equations with three unknowns: x, y, and z. Let's solve these equations one by one:

1. $80 - (35.6 + x) = 11.5$

To isolate x, first, subtract 80 from both sides:

$- (35.6 + x) = 11.5 - 80$

$- (35.6 + x) = -68.5$

Now, to isolate x, multiply both sides by -1:

$35.6 + x = 68.5$

Subtract 35.6 from both sides:

$x = 68.5 - 35.6$

$x = 32.9$

So, the solution for x is $x = 32.9$.

2. $62.4 + y - 13.4 = 91$

First, combine like terms on the left side of the equation:

$62.4 + y - 13.4 = 91$

$49 + y = 91$

Now, subtract 49 from both sides to isolate y:

$y = 91 - 49$

$y = 42$

So, the solution for y is $y = 42$.

3. $9.15 + (x - 8.5) = 21.77$

First, simplify the equation by combining like terms:

$9.15 + x - 8.5 = 21.77$

Now, subtract 9.15 from both sides:

$x - 8.5 = 21.77 - 9.15$

$x - 8.5 = 12.62$

Finally, add 8.5 to both sides to isolate x:

$x = 12.62 + 8.5$

$x = 21.12$

So, the solution for x is $x = 21.12$.

To summarize:

• $x = 32.9$
• $y = 42$
• $x = 21.12$

These are the solutions for the three unknowns in the given equations.