Answer:
a=10
b=-300
c=-1
d=-3567
Step-by-step explanation:
For a, step 1: subtract 30 form both side of equation
For b, Step 1: Simplify both sides of the equation.
b+500=200
Step 2: Subtract 500 from both sides.
b+500−500=200−500
b=−300
For c, step 1: Simplify both sides of the equation.
c−1=−2
Step 2: Add 1 to both sides.
c−1+1=−2+1
c=−1
for d, Subtract 3567 from both sides.
d+3567−3567=0−3567
d=−3567
