Question

80-(35.6+x)=11.5 2) (62.4+y)-13.4=91 3) 9.15+(x-8.5)=21.77 4) 0.175-(0.03-x)=0.15 5) (50-x)+7.16=8.132 6) 100.3 - (9.2-x)=97.64

Answer 1

Ответ:

Пошаговое объяснение:

1. 80-(35,6+х)=11,5

35,6+х=80-11,5

35,6+х=68,5

х=68,5-35,6

х=32,9

2. (62,4+у)-13,9=91

62,4+у=91+13,9

62,4+у=104,9

у=104,9-62,4

у=42,5

3. 9,15+(х-8,5)=21,77

х-8,5=21,77-9,15

х-8,5=12,62

х=12,62+8,5

х=21,12

4. 0,175-(0,03-х)=0,15

0,03-х=0,175-0,15

0,03-х=0,025

х=0,03-0,025

х=0,005

5. (50-х)+7,16=8,132

50-х=8,132-7,16

50-х=0,972

х=50-0,972

х=49,028

Answer 2

Let's solve these equations one by one:

1. 80 - (35.6 + x) = 11.5

First, distribute the negative sign to both terms inside the parentheses:

80 - 35.6 - x = 11.5

Now, subtract 35.6 from both sides:

80 - 35.6 - 35.6 - x = 11.5 - 35.6

44.4 - x = -24.1

Now, add x to both sides to isolate x:

44.4 - x + x = -24.1 + x

44.4 = -24.1 + x

Now, subtract -24.1 from both sides:

44.4 + 24.1 = -24.1 + 24.1 + x

68.5 = x

So, the solution to the first equation is x = 68.5.

2. (62.4 + y) - 13.4 = 91

First, add 13.4 to both sides:

62.4 + y - 13.4 = 91 + 13.4

48 + y = 104.4

Now, subtract 48 from both sides to isolate y:

48 + y - 48 = 104.4 - 48

y = 56.4

So, the solution to the second equation is y = 56.4.

3. 9.15 + (x - 8.5) = 21.77

First, subtract 9.15 from both sides:

9.15 - 9.15 + (x - 8.5) = 21.77 - 9.15

x - 8.5 = 12.62

Now, add 8.5 to both sides to isolate x:

x - 8.5 + 8.5 = 12.62 + 8.5

x = 21.12

So, the solution to the third equation is x = 21.12.

4. 0.175 - (0.03 - x) = 0.15

First, distribute the negative sign to both terms inside the parentheses:

0.175 - 0.03 + x = 0.15

Now, add 0.03 to both sides:

0.175 - 0.03 + x + 0.03 = 0.15 + 0.03

0.145 + x = 0.18

Now, subtract 0.145 from both sides to isolate x:

0.145 + x - 0.145 = 0.18 - 0.145

x = 0.035

So, the solution to the fourth equation is x = 0.035.

5. (50 - x) + 7.16 = 8.132

First, subtract 7.16 from both sides:

(50 - x) + 7.16 - 7.16 = 8.132 - 7.16

50 - x = 0.972

Now, subtract 50 from both sides to isolate x:

50 - x - 50 = 0.972 - 50

-x = -49.028

Multiply both sides by -1 to get x by itself:

x = 49.028

So, the solution to the fifth equation is x = 49.028.

6. 100.3 - (9.2 - x) = 97.64

First, distribute the negative sign to both terms inside the parentheses:

100.3 - 9.2 + x = 97.64

Now, subtract 9.2 from both sides:

100.3 - 9.2 - 9.2 + x = 97.64 - 9.2

91.1 + x = 88.44

Now, subtract 91.1 from both sides to isolate x:

91.1 + x - 91.1 = 88.44 - 91.1

x = -2.66

So, the solution to the sixth equation is x = -2.66.