Answer:
x = 4
Explanation:
x + 7 = 11
=> x = 11 - 7
=> x = 4
x + 7 = 11 ..... subtract by 7 on both sides
x + 7 - 7 = 11 - 7
OR,
x + 7 = 11 .........bring the 7 on the other side changing its sign + to -
x = 11 - 7
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