Which expression is equivalent to 13x(9y – 12)? A. 3xy − 4 B. 3xy − 4x C. 3xy − 12 D. 3y − 4x
1 answer:
Answer:
<h2>B. 3xy − 4x</h2>Step-by-step explanation:
step one:
Given the expression 13x(9y – 12) we are expected to expand the expression to obtain a similar expression given in the options
step two
we proceed by
step three
we proceed to both terms in the expression
bt a common factor which is 39
From our analysis, the option D matches the expression
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Answer:
x=2.5
Step-by-step explanation:
Solve for x in this systems of equations, we already have two values which equal y so half the work is finished for us.
Starting with the equation:
Add x to both sides to remove the negative x on the right side of the equation:
Subtract 12 from both sides to remove the 12 on the left side of the equation:
Divide both sides by 2 to cancel out the x coefficient