Answer:
the value of x = 3
Step-by-step explanation:
-3 (-5x+2)+x-3=39
open the bracket by multiply each by -3
15x-6+x-3=39
collect the like terms
16x-9=39
16x=39+9
16x=48
divide both sides by 16
x=3
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Answer:the length 7
Step-by-step explanation:each one is times 3 6x3 8x3 3x7=21
91
155-16s²
155- 16x2²
155- 16x4
155-64