Question

Solve the following equation: [3 marks]
28 = 4 + 3(t + 5)

Answer 1

$28=4+3(t+5)\Rightarrow 28-4=3(t+5)\left[0.5mark\right]$
$\Rightarrow 24=3(t+5)\left[0.5mark\right]\Rightarrow \frac{24}{3}=t+5\left[0.5mark\right]\Rightarrow 8=t+5\left[0.5mark\right]\Rightarrow 8-5=t\left[0.5mark\right]\Rightarrow 3=t\Rightarrow t=3\left[0.5mark\right]$