Question

find the value expression 7a-4b if a=3,b=3 find the solution 3(y+7)=5​

Answer 1

Answer:

7a - 4b

= 7×3-3×3

= 21 - 9

= 18

Answer 2

Answer:

1. 7×3-4×3= 21-12=9

2. 3y+21 = 5

3y=5-21= -16

3y= -16

y= -16/3

Step-by-step explanation:

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