Решите ур-ие: X+20=5

Question

Решите ур-ие:
X+20=5

Answer 1

X+20=5
X=5-20
X=-15 ...................

Answer 2

X + 20 = 5
вычитаем с обех частей 20
x + 20 -20 = 5 -20
x = 5 - 20

x = -15

Comments

x+20=5

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x=20-5

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20-5=15

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x-15

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x=15