Question
Solve: $3(x + 2) - 2(x - 1) = 7$
✓
Answer
$3(x + 2) - 2(x - 1) = 7$. Or,
$3 \times x + 3 \times 2 - 2 \times x - 2 \times (-1) = 7$ [On expanding the brackets]
$\Rightarrow 3x + 6 - 2x + 2 = 7 $
$\Rightarrow x + 8 = 7 $
$\Rightarrow x + 8 - 8 = 7 - 8$ [Subtracting $8$ from both the sides]
$\Rightarrow x = −1$
$3 \times x + 3 \times 2 - 2 \times x - 2 \times (-1) = 7$ [On expanding the brackets]
$\Rightarrow 3x + 6 - 2x + 2 = 7 $
$\Rightarrow x + 8 = 7 $
$\Rightarrow x + 8 - 8 = 7 - 8$ [Subtracting $8$ from both the sides]
$\Rightarrow x = −1$
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