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alisha [4.7K]
2 years ago
8

Please solve the equation: 11a-(4a-7)=77

Mathematics
2 answers:
Advocard [28]2 years ago
8 0

Answer:

a=10

Step-by-step explanation:

11a-(4a-7)=77

11a-4a+7=77

7a+7=77

7a=70

a=10

Alex73 [517]2 years ago
4 0

Answer:

a=10

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

11a−(4a−7)=77

11a+−1(4a−7)=77(Distribute the Negative Sign)

11a+−1(4a)+(−1)(−7)=77

11a+−4a+7=77

(11a+−4a)+(7)=77(Combine Like Terms)

7a+7=77

Step 2: Subtract 7 from both sides.

7a+7−7=77−7

7a=70

Step 3: Divide both sides by 7.

\frac{7a} {7} = \frac{70} {7}

Thus a = 10

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