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    Simple equations in one variable.

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    1.)
    t+4=-9

    2.)98=7z

    3.)37=y/5+14

    4.)2/7x-4/3=-3/2

    5.)8(x-8)-5x= -37

    6.)u+3>19

    7.)-4x-17 is less than or equal to 19

    8.)word problem

    a local hamburger shop sold 577 hamburgers and cheeseburgers
    on Tuesday. they sold 73 fewer cheeseburgers than hamburgers.how many hamburgers did they sell?

    9.)a=1/2h(a+b) h is the height of a trapezoid, and a and b are the lengths of the upper and lower base.solve for a

    10.)The length of a rectangle is 2 inch longer than its width. if the perimeter of the rectangle is 40 inch find its area.

    11)solve for x.

    triangle with degrees of : x degree,89 degree and 149 degree, what is x degree.

    12.)9= -3/8t

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    Solution Preview

    Here are the solutions.

    checking home work 12 problems
    1.) t + 4=-9
    or t + 4 - 4 = - 9 -4 (subtracting 4 from either side)
    or t = - 13

    2.) 98=7z
    Or (dividing by 7 on either side)
    Or 14 = z
    Or z = 14

    3.) 37 = y/5 + 14
    Or 37*5 = (y/5)*5 + 14*5 (multiplying by 5 on either side)
    Or 185 = y + 14*5
    Or 185 - 70 = y +70 - 70 (subtracting 70 from either side)
    Or y = 115

    4.) 2/7x-4/3=-3/2

    Or
    (LCM of the denominators7, 3 and 2 is 42 hence multiplying each term by 42)
    Or
    Or 12x = - 63 + 56
    Or 12 x = -7
    Or

    5.) 8(x -8) - 5x = - 37
    Or 8x - 8*8 - 5x = - 37
    Or 8x - 64 - 5x = - 37
    Or 8x - 5x = - 37 + 64
    Or 3x = ...

    Solution Summary

    Some problems on simple equations in one variable.

    $2.19