Step 7 Objective
Construct and solve linear equations with integer coefficients (with and without brackets, with negative signs anywhere in the equation, and with a positive or negative solution) using an appropriate method.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
Examples of what pupils should know and be able to do
Solve linear equations such as:
3c – 7 = –13
4(z + 5) = 8
4(b – 1) – 5(b + 1) = 0
Construct linear equations, e.g.
the length of a rectangle is three times its width. Its perimeter is 24 cm. Find its area.
I think of a number, multiply it by 7 and add 3 to the results. The answer I get is the same when I add 23 to twice the number I thought of. Construct an equation to help you to find the number I'm thinking of.