Question

8X-7=647

(3X-4).2^3=64

Answer 1

\(8x-7=647\)

\(\Rightarrow8x=647+7=654\)

\(\Rightarrow x=654:8=\frac{654}{8}=\frac{327}{4}\)

Answer 2

\(8x-7=647\)

\(\Rightarrow8x=647+7=654\)

\(\Rightarrow x=654:8\)

Answer 3

\(\left(3x-4\right).2^3=64\)

\(\Rightarrow\left(3x-4\right).8=64\)

\(\Rightarrow3x-4=64:8=8\)

\(\Rightarrow3x=8+4=12\)

\(\Rightarrow x=12:3=4\)

Answer 4

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