What is the answer to the math peoblem

Step-by-step explanation:

∠ 6=∠ 7

11 x+8=12 x-4

12 x-11 x=8+4

x=12

m∠6=11x+8=11×12+8=132+8=140°

m∠ 4+m∠ 6=180°

m∠4+140=180

m∠4=180-140=40°

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: