consider the sequence of steps to solve the equation:
5(x - 3) =
7x
2

step 1 ⇒ 10(x - 3) = 7x
step 2 ⇒ 10x - 30 = 7x
step 3 ⇒ 3x - 30 = 0
step 4 ⇒ 3x = 30
step 5 ⇒ x = 10

identify the property of equality which gets us from step 3 to step 4.
a) division property
b) addition property
c) subtraction property
d) multiplication property

Addition property.

Step-by-step explanation:

From step 3 to step 4, you are adding 30 to both sides of the equation. This makes the property addition.

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13