Question

Find the value of y when x equals 4 -3x+9y =-57

Answer 1

-3x+9y = -57+4

= -3x+ 9y = -61

XY= -61+ 3-9

xy= -67

Answer 2

sbtitute the vale of x in equation

-3x+9y=-57

-3x4+9y=-57

-12+9y=-57

9y=-57+12

9y=-45

y=-45/9

y=-5