exam Maths Puzzle Numerical Ability

Write an English version of the following equations. X+2=5

Write an algebraic equation for English Statement “Subtract 5 from the sum of
X and 7 times 3 and the result is 20

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exam Other Question

-12=6+2/3y
-12-6=6-6+2/3y
-18=2/3y
(2/3)-18=(2/3)2/3y
-12=y

Is this correct?
HELP HELP HELP

solve each of the following systems by substitution

4x-12y=5
-x+3y=-1

THANKS
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