Simplify \(10-3(x+4)\). (2 marks)
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Simplify \(10-3(x+4)\). (2 marks)
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\(-3x-2\)
\(10-3(x+4)\) | \(=10-3x-12\) |
\(=-3x-2\) |
Which of the following is \(5m+4y-m-6y\) in its simplest form?
\(B\)
\(5m+4y-m-6y\) | \(=5m-m+4y-6y\) |
\(=4m-2y\) |
\(\Rightarrow B\)
Which of the following equations has \(x=7\) as the solution?
\(C\)
\(2x\) | \(=14\) |
\(x\) | \(=\dfrac{14}{2}\) |
\(\therefore\ x\) | \(=7\) |
\(\Rightarrow C\)
What is the value of \(x\) in the equation \(\dfrac{4-x}{7}=2\)?
\(B\)
\(\dfrac{4-x}{7}\) | \(=2\) |
\(4-x\) | \(=14\) |
\(x\) | \(=4-14\) |
\(\therefore\ x\) | \(=-10\) |
\(\Rightarrow B\)
Which expression is equivalent to \(2(7x-3)+5\)?
\(A\)
\(2(7x-3)+5\)
\(=14x-6+5\)
\(=14x-1\)
\(\Rightarrow A\)