Question

Solve part 11 & 12
Don't give useless answers ​

Answer 1

Answer:

Step-by-step explanation:

we have 3x-1by 4=2x+5 by 3

so first we will cross multiply both

so we get

3(3x-1)=4(2x-5)

9x-4=8x-5

9x-8x=-5+4

x=-1

12)we have 4x+7 by 3=3x-2 by 4+1 by 2

here, since RHS is having two denominators's so we should bring both numbers of RHS to one single number

Which is

RHS=2(3x-2)+4

RHS=6x-4+4

RHS=24-4

RHS=20=20 by 1

now let's substitute 20 by 1 instead of  3x-2 by 4+1 by 2

so we get

4x+7=20

4x=13

x=13 by 4

Hope it helped and pls mark me as brainlist

Answer 2

Answer:

11 = -11.5

12= -4.9(approx)

Step-by-step explanation:

11   2x-1/4=2x+5/3               12   4x+7/3 = 3x-2/4+1/2(cross multiplication)

     3×(2x-1)=4×(2x+5)                 3×(3x-2) = 4×(4x+7)+1/2

     6x-3=8x+20                            9x-6 = 16x+28+1/2

     6x-8x=20+3                            9x-16x = 28+1/2+6

    -2x=23                                     -7x = 56+1+12/2 ( 2 as  lcm)

    -x=23÷2                                   -7x = 69/2

     x=-11.5                                     -7x = 34.5

                                                     -x = 34.5÷7

                                                      x = -4.9(approx)