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Solving One-Step Equations

Solving One-Step Equations 1.4 - Solution

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a
Solve the equation by adding 1010 to both sides. This way, we'll get xx isolated on the left-hand side.
x10=27x - 10 = 27
x=37x = 37
The solution to the equation is x=37.x=37.
b
On the left-hand side of the equation we have 5y.5y. Therefore, to isolate yy we need to divide both sides by 5.5.
5y=205y = 20
y=4y = 4
c
On the left-hand side of the equation, we have z3.\frac{z}{3}. If we multiply both sides by 3,3, we can isolate z.z.
z3=7\dfrac{z}{3} = 7
z33=73\dfrac{z}{3} \cdot 3 = 7 \cdot 3
z=73z = 7 \cdot 3
z=21z = 21