Question 75

If $$(28 \div 4 \times 7) + (44 \div 4 \times 7) - (12 \times x) = 18$$, then the value of $$x$$ is:

Solution

$$(28 \div 4 \times 7) + (44 \div 4 \times 7) - (12 \times x) = 18$$

$$\left(\frac{28}{4}\times7\right)+\left(\frac{44}{4}\times7\right)-12x=18$$

$$\left(7\times7\right)+\left(11\times7\right)-12x=18$$

$$49+77-12x=18$$

126-12x=18

12x = 126-18

12x = 108

x = 9

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