3 years ago

Solve 10a -7 = 21 - ба

Mathematics

2 answers:

Orlov [11]3 years ago

4 0

Answer:

a = 7/4

Step-by-step explanation:

10a -7 = 21 - 6а

Add 6a to each side

10a+6a -7 = 21 - 6а+6a

16a -7 = 21

Add 7 to each side

16a+7-7=21+7

16a = 28

Divide each side by 16

16a/16 = 28/16

a = 7/4

Pavlova-9 [17]3 years ago

3 0

Answer:

A=1.75

Step-by-step explanation:

$10a + 6a = 21 + 7 \\ 16a = 28 \\ divide \: both \: sides \: by \: 16 \\ a = 1.75 \: or 1 \ \frac{3}{4}$

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Solve 10a -7 = 21 - ба​

Solve 10a -7 = 21 - ба