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Aleks [24]
3 years ago
14

What is the solution to the equation 7(a - 10) = 13 – 2(2a + 3)?

Mathematics
2 answers:
11111nata11111 [884]3 years ago
8 0

Answer: Second Option

a=7

Step-by-step explanation:

We have the following equation:

7(a - 10) = 13 -2(2a + 3)

Apply distributive property

7*a-7*10 = 13 -2*2a -2*3

7a-70 = 13 -4a -6

7a-70 =-4a +7

Add 4a on both sides of the equation

7a+4a-70 =-4a+4a +7

11a-70 =7

Add 70 on both sides of the equation

11a-70+70 =7+70

11a=77

Divide by 11 on both sides of the equation

\frac{11}{11}a=\frac{77}{11}

a=7

Art [367]3 years ago
4 0

Answer:

a =7

Step-by-step explanation:

Isolate the variable by diving each side by factors that don't contain the variable.

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