Edexcel IGCSE Math A 2.4 Linear equations Question Bank
Practise solving linear equations and using algebraic working to model totals, costs, perimeters and other worded situations.
- Syllabus
- First assessment 2018
- Course
- Math A 4MA1
- Level
- Higher
Exam points
- solve one-variable equations with brackets, fractions or unknowns on both sides
- form equations from totals, costs or perimeters before calculating the required value
Covered syllabus points
2.4 Linear equations question 1
[Maximum number: 3]
Solve 5(4-x)=7-3 x
Show clear algebraic working.
x=
20-5x=7-3x
Example:
20-7=-3x+5x
OR
-5x+3x=7-20
Final answer:
x=6.5
oe
Marking guidance:
- M1 for expansion of the bracket
- M1 ft from a four-term equation for isolating x terms and numbers
- A1 dep on M1 awarded and correct working
2.4 Linear equations question 2
[Maximum number: 4]
Work out the number of metal bars that are zinc.
Show clear algebraic working.
Total bars:
y+(3y+7)+(2y-5)=566y+2=56y=9
Zinc bars:
2y-5=2(9)-5=13
Final answer:
13
Special cases from the markscheme are preserved.
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