Question

Решите 49,86+х=78,6 8-y=1,4 х-0,201=0,00203 х+(13,48-7,51)=12,3 (х-0,7)+(17,5-8,4)=24,01

Answer 1

Ответ:

1)  49,86+X=78,6

X=78,6-49,86

X=28,75

2)8-y=1,4

y=1,4-8

y=-6,6

3)x-0,201=0,00203

x=0,00203+0,201

x=0,20303

4)x+(13,48-7,51)=12,3

x+5,97=12,3

x=12,3-5,97

x=6,33

5)(x-0,7)+(17,5-8,4)=24,01

  x-0,7+9,1=24,01

x+8,4=24,01

x=24,01-8,4

x=15,61

Answer 2

To solve each equation, follow these steps:

1. 49.86 + x = 78.6

Step 1: Subtract 49.86 from both sides to isolate x. x = 78.6 - 49.86 x = 28.74

2. 8 - y = 1.4

Step 1: Add y to both sides to isolate y. 8 - y + y = 1.4 + y 8 = 1.4 + y

Step 2: Subtract 1.4 from both sides to find y. y = 8 - 1.4 y = 6.6

3. 0.00203x + (13.48 - 7.51) = 12.3

Step 1: Simplify the expression in parentheses. 0.00203x + 5.97 = 12.3

Step 2: Subtract 5.97 from both sides to isolate x. 0.00203x = 12.3 - 5.97 0.00203x = 6.33

Step 3: Divide by 0.00203 to find x. x = 6.33 / 0.00203 x ≈ 3123.65

4. (x - 0.7) + (17.5 - 8.4) = 24.01

Step 1: Simplify the expression in parentheses. x - 0.7 + 9.1 = 24.01

Step 2: Add 0.7 and 9.1. x + 8.4 = 24.01

Step 3: Subtract 8.4 from both sides to isolate x. x = 24.01 - 8.4 x = 15.61

So, the solutions are:

1. x = 28.74
2. y = 6.6
3. x ≈ 3123.65
4. x = 15.61