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Year 8 Equations 1
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If a = 3 which one of the following equations is true?
1 point
4a = 21
2a + 4 = 12
9 – a = 6
2 = a + 12
Clear selection
When 11 is added to the product of 3 and b, the result is 53. This can be written as:
1 point
3b + 11 = 53
3(b + 11) = 53
3b –11= 53
3 x 11 + b = 53
Clear selection
Which of the following values of b make the equation 2(b + 4) = 3b true?
1 point
2
4
6
8
Clear selection
John is y years old. In 7 years his age will be:
1 point
7y
19
y – 7
y + 7
Clear selection
The equation which best represents the statement ‘I am thinking of a number — when I add 15 the result is 32’ is
1 point
n + 32 = 15
n + 15 = 32
15n = 32
15 ÷ n = 32
Clear selection
The solution to the equation x – 8 = 18 is
1 point
x = 8
x = 10
x = 20
x = 26
Clear selection
The solution to the equation 8b = 32 is
1 point
b = 4
b = 8
b = 20
b = 26
Clear selection
The equation 2a + 4 = 10 is solved. The solution is
1 point
a = 3
a = 7
a = 12
a = 28
Clear selection
When solving 3a + 5 = 17, the first step to apply to both sides is:
1 point
add 5
divide by 2
subtract 5
multiply by 3
Clear selection
The solution to the equation below is
1 point
x = 35
x = 70
x = 3
x = 17
Clear selection
Two integers which satisfy the inequality x + 4 < 5 are
1 point
1, 2
-1, 1
-1, 0
0, 1
Clear selection
The solution to the equation 4x = 2x + 6 is
1 point
1
36
3
12
Clear selection
1 point
7
11
17
21
Clear selection
If x – 10 = –2 then x equals
1 point
12
8
–8
–12
Clear selection
If 2x – 5 = 21 what is the value of x
1 point
6
8
13
26
Clear selection
1 point
2
3
9
18
Clear selection
If 2p – 5 = 23 then p equals
1 point
8
9
14
28
Clear selection
If n + 3 = –4 then n equals
1 point
-7
-1
1
7
Clear selection
Solve for x , 5x + 3 = 2(x +12)
1 point
3
5
9
7
Clear selection
If 2(t + 3) = t – 4 then t equals
1 point
-10
2
8½
5½
Clear selection
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