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Fundamental Concepts (Including Fundamental Operations) — MATHS STD 7 — Question

ICSE BoardEnglish MediumSTD 7MATHSFundamental Concepts (Including Fundamental Operations)3 Marks
Question
Simplify: -1[a - 3{b - 4(a - b - 8) + 4a} + 10]
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Answer

-1[a - 3{b - 4(a - b - 8) + 4a} + 10]
= -1[a - 3{b - 4a + 4b + 32 + 4a} + 10]
= -1[a - 3{5b + 32} + 10]
= -1[a - 15b - 96 + 10]
= -1[a - 15b - 86]
= -a + 15b + 86

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