exam Maths Puzzle Numerical Ability

Translate each verbal expression into an algebraic expression a. Five subtracted from a number. b. The ratio of a number and six

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exam Other Question

In triangle PQR, QS is perpendicular to PR, PQ is congruent to RQ, angle 1 equals 4x, angle 2 equals 2x+18 a.prove triangle PQS is congruent to traingle RQS
b.Find the value of x 1.03-0.62x=0.71-0.22x
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1.7t+8-1.62t=0.4t-0.32+8
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0.7n-15+n=2n-8-0.4n I DO NOT KNOW HOW TO SOLVE THESE PROBLEMS I NEED HELP ALL 3 PROBLEMS