Simplification
3b+5b-2b
6b
In the expression which is the coefficient?
4x+5
4
x+5=15
x=10
2x+3=13
x=5
Expand the bracket 3(x+4) using the distributive property
3x+12
4x+3b-x+10
3x+3b+10
Translate: The sum of 8 and a number
8+n
45=x-10
x=55
30=4x-2
x=8
Expand the bracket -3(x+5)
-3x - 15
2x-3y+x-4-y
3x-4y-4
Translate 10 added to a number halved
10+n/2
4x=48
x=12
x/2 + 5= 25
x=40
Expand the bracket -2(-4x-9)
8x+18
7x+4x5x-20
27x-20
Calculate the width of a rectangle if the length is 6cm and area is 48cm2
w= 8cm
x/3=7
x=21
18 = 5x - 7
x = 5
Expand and simplify 2(x+4)+3(x−1)
2x + 8 + 3x - 3
5x + 5
5a^2 + 3a−2a^2+4−3a+6
Note: ^2 means to the 2nd power
3a^2+10
Rearrange the formula so the width is the subject (=w):
Area = width x Length
A = w x L
w = A / L
x2 = 49
7
12 = x/8 + 10
x = 16
Expand and simplify 5(2a+3b)−2(4a−b)
10a + 15b - 8a + 2b
2a + 17b