Question 1

Calculate $-3(x - 2y)$

Accepted Answer

$-3x+6y$

Answer

$-3x-6y$

Answer

$3x+6y$

Answer

$3x-6y$

Question 2

Calculate $(4a - 6b)	imes \frac{1}{2}$

Accepted Answer

$2a-3b$

Answer

$-2a-3b$

Answer

$2a+3b$

Answer

$-2a-3b$

Question 3

Calculate  $5(x + 3y) - 3(2x - 5y + 1)$

Accepted Answer

$-x + 30y - 3$

Answer

$-x + 30y + 3$

Answer

$x + 30y + 3$

Answer

$-x - 30y - 3$

Question 4

Calculate $\frac{1}{3}(2x + y) - \frac{1}{6}(x - 5y)$

Accepted Answer

$\frac{1}{2}x + \frac{7}{6}y$

Answer

$\frac{1}{3}x + \frac{7}{6}y$

Answer

$-\frac{1}{2}x + \frac{6}{7}y$

Answer

$\frac{1}{2}x - \frac{7}{6}y$

Question 5

Calculate $\frac{1}{3}(2x - 9y) + \frac{2}{5}(-x - 15y)$

Accepted Answer

$\frac{4}{15}x - 9y$

Answer

$-\frac{4}{15}x - 9y$

Answer

$\frac{4}{15}x + 9y$

Answer

$\frac{4}{9}x - 9y$

Question 6

Calculate $a - \frac{a-3b}{5}$

Accepted Answer

$\frac{4a + 3b}{5}$

Answer

$\frac{4a - 3b}{5}$

Answer

$\frac{2a + 3b}{5}$

Answer

$\frac{-4a + 3b}{5}$

Question 7

Calculate  $-3(4x^2y-3xy-8y^2)-2(2x^2y+3xy-5y^2)$

Accepted Answer

$-16x^2y+3xy+34y^2$

Answer

$16x^2y+3xy+34y^2$

Answer

$-16x^2y+15xy+14y^2$

Answer

$16x^2y+15xy-14y^2$

Question 8

Calculate $0.2a - [{a - (0.7a - 0.5b) - 2b]}$

Accepted Answer

$-0.1a + 1.5b$

Answer

$-0.1a - 1.5b$

Answer

$0.1a + 1.5b$

Answer

$0.1a - 1.5b$

Question 9

Calculate $\frac{5a-9b}{2}- \frac{2}{5}(6a - 11b)$

Accepted Answer

$\frac{a-b}{10}$

Answer

$\frac{a+b}{10}$

Answer

$\frac{b-a}{10}$

Answer

$-\frac{a-b}{10}$

Question 10

Calculate $\frac{1}{3}(2x + y) - \frac{1}{6}(x - 5y)$

Accepted Answer

$\frac{1}{2}x + \frac{7}{6}y$

Answer

$\frac{1}{3}x + \frac{7}{6}y$

Answer

$\frac{1}{2}x - \frac{7}{6}y$

Answer

$-\frac{1}{2}x + \frac{6}{7}y$

Question 11

Calculate $\frac{2}{3}(x-y) - \frac{8x-6y}{5} - \frac{2y-5x}{4}$

Accepted Answer

$\frac{19x+38y}{60}$

Answer

$\frac{131x-106y}{60}$

Answer

$-\frac{19x-38y}{60}$

Answer

$\frac{-131x-106y}{60}$

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