Question

1) (12m - 5m). 4 - 252 2) (4 + 3n) - 11 - 154:3) 45 : (4m - m) - 3;4) (19n - 6n): 4 - 26:5) (16m + 5m): 18 = 1:6) (17n - 8n) - 13 = 351.​

Answer 1

Ответ: не все уравнения записаны верно

Пошаговое объяснение:

Answer 2

It looks like you've provided a set of mathematical expressions. I'll help you solve each of them step by step:

1. $(12m - 5m) \cdot 4 - 252$ First, simplify within the parentheses: $7m \cdot 4 - 252$ Then, multiply: $28m - 252$

2. $(4 + 3n) - 11 - \frac{154}{3}$ Simplify within the parentheses: $4 + 3n - 11 - \frac{154}{3}$ Combine like terms: $3n - 7 - \frac{154}{3}$

3. $45 : (4m - m) - 3$ Simplify within the parentheses: $45 : 3m - 3$ Divide: $15 : m - 3$

4. $(19n - 6n) : 4 - \frac{26}{5}$ Simplify within the parentheses: $13n : 4 - \frac{26}{5}$ Divide: $\frac{13n}{4} - \frac{26}{5}$

5. $(16m + 5m) : 18 = 1$ Simplify within the parentheses: $21m : 18 = 1$ Divide: $\frac{21m}{18} = 1$ Reduce the fraction: $\frac{7m}{6} = 1$ Solve for $m$: $7m = 6$ $m = \frac{6}{7}$

6. $(17n - 8n) - 13 = 351$ Simplify within the parentheses: $9n - 13 = 351$ Add 13 to both sides: $9n = 364$ Solve for $n$: $n = \frac{364}{9}$

Please note that in the provided expression 6, there seems to be a discrepancy in the equation format. It seems like you have a subtraction followed by an equal sign and a value. Please double-check the expression for accuracy.