Question

(78-x)+36+(3x-10)= 180
What is x

Answer 1

$(78-x)+36+(3x-10)= 180\\\\78-x+36+3x-10= 180\\\\3x-x+78+36-10=180\\\\2x+104=180\qquad|-104\\\\2x+104-104=180-104\\\\2x=76\qquad|:2\\\\\boxed{x=38}$

Answer 2

78+-x+36+3x+-10=180

2x+78+36+-10=180

2x+104=180

2x=76

x=38