Identify the property used in the first four steps to solve the equation 4(x-7)=2x-6
1 answer:
Answer:
See explanation
Step-by-step explanation:
Given: 4(x-7)=2x-6
Step 1: Use distibutive property of equality
4x-28=2x-6
Step 2: Use addition property of equality (add -2x to both sides)
4x-28-2x=2x-6-2x
2x-28=-6
Step 3: Use addition property of equality (add 28 to both sides)
2x-28+28=-6+28
2x=22
Step 4: Use division property of equality (divide by 2)
x=11
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Pythagorean theorem helps us find a sides measurements in a right triangle. the formula is a^2+b^2=c^2<span />
Answer:
y = -7; x = 4
Step-by-step explanation:
x - 7y = 53
x = 7y + 53
-4x - 5y = 19
-4(7y + 53) - 5y = 19
-28y - 212 - 5y = 19
-33y = 231
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y = -7
x - 7(-7) = 53
x + 49 = 53
x = 4