Solve: y = 3x - 4
y = x + 2

y = 5

Step-by-step explanation:

Isolate x to plug in to other equation

y   =   x  +  2

-y-x     -y-x

(- x = -y + 2) / -1

x = y - 2

Plug into other equation

y = 3(y-2) - 4

Distribute

y = 3y-6-4

y = 3y-10

-3y  -3y

(-2y = -10)/-2

y = 5

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3