Solve: 3(2x-5)+4x=5x+15

solve: 2(8x-3)=4(4x+7)

plz, !

Step-by-step explanation:

3*2x=6x, 3*5=10

So, 6x+10+4x = 5x+15

Add 6 and 4 which leaves you with 10x+10 = 5x+15

subtract 10 from 15 and that leaves you with 5 divided by 10x

x=2

Same for second equation

2*8x=16x and 2*3= 6

So 16x-6=16x+28

Add 6 to both sides so you get 34.

Now that 6 is gone you want x on one side so subtract 16x an it leaves you with 0. so X=34

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,