
Answering Further Algebra
 
Let's see how you got on:
 6(2x  3) = 42
Divide both sides by 6: (2x  3) = 7
Lose the brackets and add 3 to both sides: 2x = 10
Solve: x = 5
 5(4  y) = 20
Divide both sides by 5: (4  y) = 4
Drop brackets and add y to both sides: 4 = 4 + y
Solution: y = 0
 (12 + b) ÷ 3 = 7
Multiply both sides by 3: (12 + b) = 21
Lose brackets and subtract 12 from both sides: b = 9

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