Question

Решите уравнения: 1) 2y-(4-y)+(3y-2)=y+4
2) 2x-7×(3x-1)=26
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Answer 1

1)

2y - (4 - y) + (3y - 2) = y + 4

2y - 4 + y + 3y - 2 = y + 4

2y + 3y + y - y = 4 + 4 + 2

5y = 10

y = 10 ÷ 2

y = 2

2)

2x - 7(3x - 1) = 26

2x - 21x + 7 = 26

-19x = 26 - 7

-19x = 19

x = 19 ÷ (-19)

x = -1