An estate has 6 houses and each house has x lighting fittings which need 1 lamp each, and y fittings | MathCelebrity Forum

An estate has 6 houses and each house has x lighting fittings which need 1 lamp each, and y fittings

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An estate has 6 houses and each house has x lighting fittings which need 1 lamp each, and y fittings which need 3 lamps each. Write a formula to find z, the total number of lamps needed on the estate.

z = 6(x * 1 + 3 * y)
z = 6(x + 3y)
 
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