Algebra

2.5,4.5,6.5,8.5
nth term=?

-7, -4, -1, 2, 5
nth term=?

rearrange to get x by itself...
x+b=e

multiply out... 2(x+1)+3(x+3)

multiply out... 2(4x+3)+4(3x+4)

rearrange to make x the subject...
ax=b

multiply out... 3(4x+5)

multiply out... 5(6x-1)

rearrange to make x the subject...
ux-h=m

multiply out... 4x+5(2x+1)

rearrange to make x the subject...
xa+k=m²

multiply out... 8(1+2x)-5

rearrange to make x the subject...
d(x+e)=f

rearrange to make x the subject...
d(x+e)=f

rearrange to me x the subject...
m(x+m)=n²

rearrange to make x the subject...
m(b+x)=e

rearrange to make x the subject...
x/p=a

multiply out... 4(3x-2)-10x

rearrange to make x the subject...
x/a=(b+c)

solve... 10n=3n+21

rearrange to make x the subject...
x/h=c/d

solve... 1+3n=n+2

solve... 5n-4=n

p=6q+5
Find p when q=13

solve... 3(x+2)=2(x+5)

solve... 5(x-2)=3(x+2)

180(n-2)
n=6

solve... 6x-10=2(x+7)

solve... 4(2x-1)=3(x+1)-2

solve... 6+3(x+2)=2(x+5)+4

p=100+2x
x=3

solve... 3x+2(x+1)=3x+12

solve... 4x-2(x+4)=x+1

p=100+2x
x=1/2

form and solve this equation...
think of a number, multiply by 3, add 1, the answer is 19.

n(n+1)/2
n=99

z=3(2x+5)
x=2

t=5a+2n
a=3 n=4

form and solve this equation...
think of a number, add 5, multiply by 4, the answer is 58.

the length of a rectangle is double the width... the perimeter of the rectangle =30cm... find the width

2(n²)+2n
n=2

v=3r²h
r=5 h=4

c=mx+7
m=5 x=1

t=a²+3a-5
a=10

t=a²+3a-5
a=1

simplify 3b-3a-5c+4b

simplify 5x+3y-6x+4y+3z

factorise... 6x²+9x

factorise... 10x⁵-15x³

expand... (x+2)(x+7)

expand... (2x-4)²

expand... (x-3)(x+3)

3, 7, 11, 15
nth term=?

expand... (3x+4)(x-2)

(x+4)²

(2x+1)²

expand... (x+2)²+(2x+1)²

expand... (x-3)²-(x+1)²

x=3y+2
Find x when y=4

a=4b=1
Find a when b=5

c=d/5+3
Find c when d=15

e=f/2-4 Find e when f=8