Question
Simplify: $- 3(a + b) + 4(2a - 3b) - (2a - b)$
✓
Answer
We have: $-3(a + b) + 4(2a - 3b) - (2a - b) $
$= -3a - 3b + 8a - 12b - 2a + b $
$= -3a + 8a - 2a - 3b - 12b + b $
$= ( -3 + 8 - 2)a + ( -3 - 12 + 1)b $
$= 3a - 14b$
$= -3a - 3b + 8a - 12b - 2a + b $
$= -3a + 8a - 2a - 3b - 12b + b $
$= ( -3 + 8 - 2)a + ( -3 - 12 + 1)b $
$= 3a - 14b$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The angles of a triangle are in the ratio $3 : 5 : 7$. Find the measures of these angles.
→After $16$ years, Seema will be three times as old as she is now. Find her present age.
→Express as an improver fraction: $7\frac{3}4$
→Show that $48, 60, 75$ are in continued proportion.
→Construct line segments whose lengths are: $4.8\ cm.$
→If one angle of a triangle is equal to the sum of the other two, show that the triangle is a right triangle.
The marked price of a table is $Rs. 625$ and its sale price is $Rs 500$. What is the ratio of the sale price to the marked price?
→The number of students who absented from the class during a week are given below:
Take the scale $= 2$ absenteees. 
Draw a pictograph.
→| Day | Monday | Tuesday | Wednesday | Thursday | Friday |
| No. of absentees | $6$ | $2$ | $4$ | $2$ | $8$ |
Draw a pictograph.Arrange the following numbers in descending order: $54796203, 4675238, 63240613, 5125648, 589623$
→$40$ persons $: 200$ persons $= ₹15 : ₹75$
→