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6 July, 00:24

If a = 5i - 6j and b = - 2i + 4j, find - 3a + 2b

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  1. 6 July, 00:48
    0
    -19i + 26j

    Step-by-step explanation:

    -3 (5i - 6j) + 2 (-2i + 4j)

    Distribute/multiply the - 3 to everything in the parentheses

    -15i + 18j + 2 (-2i + 4j)

    Distribute/multiply the 2 to everything in the parentheses

    -15i + 18j - 4i + 8j

    Combine like terms

    -19i + 26j
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