Answer:
[tex]y = 3 \times 9 - 2 \times 7 \times 3 + 4 \times 3[/tex]
To make the calculation easier, factor the expression
[tex]y = 3(9 - 2 \times 7 + 4)[/tex]
Multiply the numbers
[tex]y = 3(9 - 14 + 4)[/tex]
Calculate the sum or difference
[tex]y = 3 \times ( - 1)[/tex]
Any expression multiplied by - 1 equals its opposite
[tex]y = - 3[/tex]
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