Photo AI

Simplify. (a) 4a + 5a - 7a (b) 3g - 2f + 8g + 5f - OCR - GCSE Maths - Question 5 - 2019 - Paper 1

Question icon

Question 5

Simplify.-(a)-4a-+-5a---7a--(b)-3g---2f-+-8g-+-5f-OCR-GCSE Maths-Question 5-2019-Paper 1.png

Simplify. (a) 4a + 5a - 7a (b) 3g - 2f + 8g + 5f

Worked Solution & Example Answer:Simplify. (a) 4a + 5a - 7a (b) 3g - 2f + 8g + 5f - OCR - GCSE Maths - Question 5 - 2019 - Paper 1

Step 1

(a) 4a + 5a - 7a

96%

114 rated

Answer

To simplify the expression, combine like terms:

  1. Add the coefficients of the terms involving 'a':

    4+5−7=24 + 5 - 7 = 2

  2. Thus, the simplified expression is:

    2a2a

Step 2

(b) 3g - 2f + 8g + 5f

99%

104 rated

Answer

To simplify this expression, we will group the like terms:

  1. Combine the coefficients of 'g':

    3+8=113 + 8 = 11

  2. Combine the coefficients of 'f':

    −2+5=3-2 + 5 = 3

  3. Therefore, the simplified expression can be written as:

    11g+3f11g + 3f

Join the GCSE students using SimpleStudy...

97% of Students

Report Improved Results

98% of Students

Recommend to friends

100,000+

Students Supported

1 Million+

Questions answered

;