7.5x + 40 = 70
Note the equal sign. What you do to one side, you do to the other. Isolate the x. Do the opposite of PEMDAS.
First subtract 40 from both sides
7.5x + 40 (-40) = 70 (-40)
7.5x = 70 - 40
7.5x = 30
Next, divide 7.5 from both sides
7.5x/7.5 = 30/7.5
x = 30/7.5
x = 4
4 friends are going to the aquarium together
hope this helps
7/8(x-1/2)= -49/80
Multiply the bracket by 7/8
7/8x-7/16= -49/80
Move -7/16 to other side. Sign changes from -7/16 to +7/16
7/8x-7/16+7/16= -49/80+7/16
7/8x= -49/80+7/16
Find common denominator for 7/16 which is 5. Multiply 5 for the numerator and denominator.
7(5) / 16 (5)
= 35/80
7/8x= -49/80+35/80
7/8x= -14/80
Reduce -14/80 , divide by 2
(-14) /2=7 , 80/2= 40
-14/80= -7/40
7/8x= -7/40
Multiply by 8/7
7/8x*8/7= -7/40 * 8/7
Cross out 7 and 7 , and divide by 7. Cross out -7 and 7 and divide by 7. Cross out 40 and 8 divide by 8.
x= -1/5
Answer: x= -1/5 - G.
1 meter = 3.2808399 feet
<span>810m * 3.2808399 ft/m </span>
<span>2657.48 feet </span>
<span>2657.48/5.4 </span>
<span>492.12592593 </span>
<span>Scale </span>
<span>1:492 </span>