1)4x+3=x-9 2)2x-19=8-x3)7x+3=3x+274)3x-7=2x+35)42-x=2x+96)20+3x=4-x...

hkurtmemet @hkurtmemet

July 2022 1 1 Report

1)4x+3=x-9
2)2x-19=8-x
3)7x+3=3x+27
4)3x-7=2x+3
5)42-x=2x+9
6)20+3x=4-x

Answers & Comments

Itakeyourquenn

Ответ:

1) -4

2) 9

3) 6

4) 10

5) 11

6) -4

Объяснение:

$4x + 3 = x - 9 \\ 4x - x = - 9 - 3 \\ 3x = - 12 \\ x = \frac{ - 12}{3} \\ x = - 4$

$2x - 19 = 8 - x \\ 2x + x = 8 + 19 \\ 3x = 27 \\ x = \frac{27}{3} \\ x = 9$

$7x + 3 = 3x + 27 \\ 7x - 3x = 27 - 3 \\ 4x = 24 \\ x = \frac{24}{4} \\ x = 6$

$3x - 7 = 2x + 3 \\ 3x - 2x = 3 + 7 \\ x = 10$

$42 - x = 2x + 9 \\ - x - 2x = 9 - 42 \\ - 3x = - 33 \\ x = \frac{ - 33}{ - 3} \\ x = 11$

$20 + 3x = 4 - x \\ 3x + x = 4 - 20 \\ 4x = - 16 \\ x = \frac{ - 16}{4} \\ x = - 4$

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