Answer:
z = 11
Step-by-step explanation:
First, simplify. Combine like terms.
-2z + (3 + 7) = -12
-2z + 10 = -12
Isolate the variable, z. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. Subtract 10 from both sides
-2z + 10 (-10) = -12 (-10)
-2z = -12 - 10
-2z = -22
Isolate the variable, z. Divide -2 from both sides
(-2z)/-2 = (-22)/-2
z = -22/ -2
z = 11
11 is your answer for z.
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{ Answer }
Z = 11
{ Explanation }
Add 3 + 7:
3 + 7 = 10
Subtract 10 from both sides:
-2z + 10 - 10 = (-12) - 10
Simplify:
-2z = -22
Divide both sides by Z:
-2z/-2 = -22/-2
Simplify:
Z = 11
<> Eclipsed <>
