Question

a) work out the value of 1+3x when x=1

b) work out the value of 7-2x when x= -3

Answer 1

$x = 1....given \\ \\ = 1 + 3 \times x \\ = 1 + 3 \times 1 \\ = 1 + 3 \\ = 4$

$x = ( - 3)....given \\ \\ = 7 - 2 \times x \\ = 7 - 2 \times ( - 3) \\ = 7 - ( - 6) \\ = 7 + 6 \\ = 13$

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Answer 2

Answer:

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