Question

5). (x-3): 4= 6
6). 13x + 4x = 408
7). 47x - 15x = 2144
8). a + 23a = 1032
9). 7b + 6b - 29 = 374
10). 19y - 12y - 47 = 1388 решить задание в полном виде​

Answer 1

Пошаговое объяснение:

5)

$(x - 3) \div 4 = 6 \\ \frac{x - 3}{4?} = 6 \\ x = 24 + 3 \\ x = 27$

6)

$13x + 4x = 408 \\ 17x = 408 \\ x = \frac{408}{17?} \\ x = 24$

7)

$47x - 15x = 2144 \\ 32x = 2144 \\ x = \frac{2144}{32?} \\ x = 67$

8)

$a + 23a = 1032 \\ 24a = 1032 \\ a = \frac{1032}{24 ?} \\ a = 43$

9)

$7b + 6b - 29 = 374 \\ 13b - 29 = 374 \\ 13b = 374 + 29 \\ 13b = 403 \\ b = \frac{403}{13 ?} \\ b = 31$

10)

$19y - 12y - 47 = 1388 \\ 7y - 47 = 1388 \\ 7y = 1388 + 47 \\ 7y = 1435 \\ y = \frac{1435}{7 ?} \\ y = 205$

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