Question

Help me with my math homework please

Answer 1

21-
x is 18
$x + 3x + 18 = 90 \\ 4x + 18 = 90 \\ 4x = 90 - 18 = 72$
$x = \frac{72}{4} =18$


22- x is 50.5
$x + 58 + x + 21 = 180 \\ 2x + 79 = 180 \\ 2x = 180 - 79 = 101$
$x = \frac{101}{2} = 50.5$


23- x is 196/3
$2x + 8 + x - 24 = 180 \\ 3x = 24 + 180 - 8 = 196\\ x = \frac{196}{3}$



24- x is 88.5
$x + 15 + x - 12 = 180 \\ 2x = 180 - 15 + 12 = 177\\ x = \frac{177}{2} = 88.5$




25- x is 131

y is 180- 131=49






good luck