# The Math Challenge: Question Preview (ID: 9399)

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**What is the sum of x-3 and 2x+7?**

a) 2x+4

b) 3x+10

c) 3x+4

d) 2x+10

**(8u+3) - (4u-2)=**

a) 12u+5

b) 4u+1

c) 4u+5

d) 12u+1

**-(2x-4+5x)=**

a) -7x+4

b) 3x-4

c) 3x+4

d) -7x-4

**(a+3b+5)+(3a-b-5)=**

a) 4a+4b

b) 4a+2b

c) 4a+4b+10

d) 4a+2b+10

**(x-y)-(y-x)**

a) 0

b) -2y

c) 2x+2y

d) 2x-2y

**What is the sum of r-10 and 100-3r?**

a) 90-2r

b) 90+2r

c) 110-2r

d) 110+2r

**6 + 2(x + y - 2) =**

a) 2x + y + 2

b) 2x + y + 4

c) 2x + 2y + 2

d) 2x + 2y + 4

**(12a + 9 - 5b) + (17b - 6 - 2a) =**

a) 29a + 3 - 7b

b) 10a + 12b + 3

c) 10a - 22b + 3

d) 14a + 12b + 15

**Find the sum of (4x + 9) and (x - 12)**

a) 5x + 3

b) 5x + 9 + 3

c) 5x - 9 + 3

d) 5x - 3

**Simplify the expression -10 (x - 3y + 11)**

a) 10x - 30y - 110

b) -10x + 30y - 110

c) 10x + 30y - 110

d) -10x - 30y + 110

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