Question

1) 0,4(x − 3) + 2,5 = 0,5(4 + x) РАСПИСЫВАТЬ! 2)x-4/4 = x+3/7 (Дробь) расписывать!

Answer 1

Пошаговое объяснение:

1) 0,4(x − 3) + 2,5 = 0,5(4 + x)

0,4х-1,2+2,5=0,5(4+х)

0,4х-1,2+2,5=2+0,5

0,4х+1,3=2+0,5

0,4-0,5+1,3=2

0,4-0,5=2-1,3

0,1х=2-1,3

-0,1=0,7

х=-7

2)x-4/4 = x+3/7

-4/4=3/7

-1=3/7

x-утверждение ложно для любого значения х (обозначается перечёркнутый круг )

Answer 2

1. Let's solve the equation step by step:

0,4(x - 3) + 2,5 = 0,5(4 + x)

Step 1: Distribute the decimals on both sides of the equation: 0.4x - 1.2 + 2.5 = 0.5 * 4 + 0.5x

Step 2: Combine like terms: 0.4x + 1.3 = 2 + 0.5x

Step 3: Move the variable terms to one side and the constant terms to the other side: 0.4x - 0.5x = 2 - 1.3

Step 4: Combine like terms again: -0.1x = 0.7

Step 5: Solve for x by dividing both sides by -0.1: x = 0.7 / -0.1

Step 6: Simplify the result: x = -7

So, the solution to the equation is x = -7.

2. Let's solve the equation with fractions step by step:

x - 4/4 = x + 3/7

Step 1: Simplify the fractions: x - 1 = x + 3/7

Step 2: Move the variable terms to one side and the constant terms to the other side: x - x = 3/7 + 1

Step 3: Combine like terms and find a common denominator for the fractions: 0 = (3 + 7) / 7 0 = 10 / 7

Since the equation is inconsistent (0 ≠ 10/7), there is no solution for this equation. This means that there is no value of x that satisfies the equation, making it an inconsistent equation.